Politico has called Thune "unambiguously
conservative but temperamentally moderate", a "collaborator instead of a combatant", and an institutionalist.
5G and rural broadband Thune has been a leading advocate for
5G deployment and rural broadband expansion. He introduced the STREAMLINE Small Cell Deployment Act and the Telecommunications Skilled Workforce Act to address infrastructure and workforce challenges for next-generation wireless technology. As chairman of the Communications, Technology, Innovation, and the Internet Subcommittee from 2019 to 2021, he focused on ensuring rural communities' access to 5G technology and precision agriculture applications.
Agriculture In March 2019, Thune was among 38 senators to sign a letter to
Agriculture Secretary Sonny Perdue warning that dairy farmers "have continued to face market instability and are struggling to survive the fourth year of sustained low prices" and urging his department to "strongly encourage these farmers to consider the Dairy Margin Coverage program."
COVID-19 In May 2020, a group of Senate Republicans planned to introduce a privacy bill that would regulate the data
COVID-19 contact-tracing apps collect. Senator
Roger Wicker said the legislation would "hold businesses accountable to consumers if they use personal data to fight the COVID-19 pandemic". Thune said the act would permit the creation of "platforms that could trace the virus and help flatten the curve and stop the spread—and maintaining privacy protections for U.S. citizens".
Drug policy In December 2017, Thune was among six senators to sign a letter to Senate Majority Leader
Mitch McConnell and Minority Leader
Chuck Schumer requesting their "help in ensuring the long-term sustainability of the
340B program", a rule mandating that drug companies give discounts to health-care organizations presently serving large numbers of low-income patients.
Economy In January 2019, Thune introduced legislation to repeal the
estate tax, which applies to couples with estates above $22.4 million.
Education In February 2019, Thune was among 20 senators to sponsor the Employer Participation in Repayment Act, enabling employers to contribute up to $5,250 to their employees' student loans.
Energy On March 6, 2014, Thune introduced the
Reliable Home Heating Act (S. 2086; 113th Congress). The bill would require the
Federal Motor Carrier Safety Administration (FMCSA) to exempt motor carriers that transport home heating oil from numerous federal safety regulations if the governor of a state declares a
state of emergency caused by a shortage of residential heating fuel. The bill also would require the
Energy Information Administration (EIA) to notify states if certain petroleum reserves fall below historical averages.
Environment In March 2019, Thune joined all Senate Republicans, three Democrats, and independent
Angus King in voting against the
Green New Deal resolution. Arguing against its implementation, Thune said the resolution would "absolutely be devastating and disastrous" for the agriculture economy both in South Dakota and across the US.
Facebook In May 2016, Thune sent
Facebook a letter requesting details on how it operates its Trending Topics feature, after a
Gizmodo article cited anonymous sources (claiming to be former Facebook employees) who alleged systemic anti-conservative political bias in how material is selected for display in the list. Some commentators criticized Thune's letter as an example of government overreach against a private company. Facebook denied the bias allegations. Thune thanked Facebook in a public statement.
Foreign policy In November 2006, Thune said he believed the U.S. could win the
Iraq War through stability. He elaborated, "It's making sure that Iraq can't be a staging ground for terrorist attacks against its neighbors in the region or, worse yet, against the United States." Thune also espoused the position that the Bush administration and a majority of members of Congress would grant military commanders the final decision on when to reduce U.S. military forces there. In July 2008, Thune said that the Bush administration's moves in Iraq had been a "remarkable success", noting civilian casualties had been reduced by 80 percent, and charged Democratic presidential candidate and Senator
Barack Obama with failing "to acknowledge the basic fact of the success and result and progress and gains that have been made as a result of the surge." In December 2010, Thune was among 26 senators who voted against the ratification of
New START, a nuclear arms reduction treaty between the United States and the
Russian Federation obliging both countries to have no more than 1,550 strategic warheads and 700 launchers deployed during the next seven years, and providing for a continuation of on-site inspections that halted when
START I expired the previous year. It was the first arms treaty with Russia in eight years. In November 2012, Thune and
Chuck Grassley requested that
Treasury Secretary Timothy Geithner provide a review of the Chinese company Wanxiang Group's plan to acquire bankrupt battery maker A123, arguing that the transaction should be reviewed to ensure that U.S. military and taxpayer interests in A123 were protected. In October 2018, Thune requested staff briefings about a
Bloomberg report that the
Chinese government had implanted malicious hardware into server motherboards, writing charges that "the U.S. hardware supply chain has been purposely tampered with by a foreign power [and] must be taken seriously." In September 2016, Thune was among 34 senators to sign a letter to
Secretary of State John Kerry advocating that the United States use "all available tools to dissuade Russia from continuing its airstrikes in Syria" from an
Iranian airbase near
Hamadan and stating that the airstrikes violated "a legally binding Security Council Resolution" on Iran. In June 2017, Thune co-sponsored the
Israel Anti-Boycott Act (s. 720), which would have made it a federal crime, punishable by a maximum sentence of 20 years' imprisonment, to encourage or participate in boycotts against Israel. In March 2018, Thune voted to table a resolution spearheaded by
Bernie Sanders,
Chris Murphy, and
Mike Lee that would have required President Trump to withdraw American troops either in or influencing
Yemen within the next 30 days unless they were combating
Al-Qaeda. on February 6, 2025 After the
2022 Russian invasion of Ukraine, Thune said that the
Ukrainian people could not sustain the war without military support from the U.S. and other countries. He called on European partners to make robust contributions to help Ukraine. In 2025, Thune supported
secondary sanctions against Russia that would impose 500%
tariffs on countries that buy
Russian oil,
natural gas,
uranium and other exports.
Gun control Thune advocates gun rights, having sponsored legislation that would allow individuals with
concealed carry permits to use such permits as a valid permit in other states. He also voted against banning standard-capacity magazines of over 10 rounds.
Health care Thune was among 13 senators who drafted the
Senate version of the
American Health Care Act of 2017. Released on June 22, 2017, the bill was known as the Better Care Reconciliation Act of 2017. In July, Thune said that Republicans would continue trying to repeal the
Affordable Care Act regardless of whether that month's effort collapsed: "We are going to vote to repeal and replace Obamacare. It's not a question of if, it's a question of when." On July 25, the Senate voted down The Better Care Reconciliation Act, 43-57.
Judiciary In March 2016, about seven months before the next presidential election, Thune declared his opposition to considering President Obama's nominee to the Supreme Court, saying that "the next president should make this lifetime appointment to the Supreme Court" because the "American people deserve to have their voices heard on the nomination of the next Supreme Court justice". In September 2020, less than two months before the next presidential election, Thune supported an immediate vote on Trump's nominee to fill the Supreme Court vacancy caused by Justice
Ruth Bader Ginsburg's death.
Social Security Thune was among 20 senators to vote against the
Social Security Fairness Act in December 2024.
Trade In January 2018, Thune was among 36 Republican senators to sign a letter to President Trump requesting he preserve the
North American Free Trade Agreement by modernizing it for the economy of the 21st century. In July 2018, as the Trump administration pushed for aid for agricultural producers affected by retaliatory tariffs, Thune said the plan offered a "false and short-term" sense of security and cited the importance of fair and free trade for South Dakota's farmers.
2020 presidential election results In December 2020, Thune said he opposed any further efforts to challenge the 2020 presidential election results. He argued that such efforts would "go down like a shot dog" in the Senate. Then-President
Donald Trump, who contended that the election results were illegitimate and that he had defeated Democratic nominee
Joe Biden, responded by attacking Thune on Twitter and publicly calling on South Dakota governor
Kristi Noem to challenge him in a 2022 U.S. Senate primary (she declined). Thune directly denounced Trump for attempting to overturn the results of the 2020 election and his role in the January 6, 2021, riot at the Capitol. He called his involvement and that of the rioters "inexcusable". Thune
voted to certify the 2020 presidential election results. ==Presidential and vice-presidential speculation==