Taiwanese TSMC and South Korean rival Samsung have near total control of the leading edge of the semiconductor industry with TSMC significantly ahead of Samsung. This situation in which global production capabilities have been concentrated in just a few selected countries leads to significant geopolitical challenges and contributes heavily to changes in global techno-politics. Due to its significant position in both the American and Chinese tech industry supply chains, Taiwan has been enmeshed in the technological front of the
China–United States trade war and the larger geopolitical conflict between the two powers. The US prohibited companies which use American equipment or IP from exporting products to prohibited companies in China. This forced Taiwanese semiconductor companies to stop doing business with major Chinese clients like
Huawei. In January 2021 the German government appealed to the Taiwanese government to help persuade Taiwanese semiconductor companies to ramp up production as a global semiconductor shortage was hampering the German economy's recovery from the COVID-19 pandemic. A lack of semiconductors had caused vehicle production lines to be idled, leading German Economy Minister
Peter Altmaier to personally reach out to Taiwan's economics affairs minister
Wang Mei-hua in an attempt to get Taiwanese semiconductor companies to increase their manufacturing capacity. Similar requests had been made by the United States, the European Union, and Japan. The Taiwanese government and TSMC announced that as much as possible priority would be given to automakers from Taiwan's close geopolitical allies. In April 2021 the US Government blacklisted seven Chinese supercomputing companies due to alleged involvement in supplying equipment to the Peoples Liberation Army (PLA), Chinese
military–industrial complex, and Weapon of Mass Destruction (WMD) programs. In response Taiwanese chipmakers
Alchip and TSMC suspended new orders from Chinese supercomputing company Tianjin Phytium Information Technology. The geopolitical strength of the semiconductor industry is often referred to as Taiwan's "Silicon Shield." According to the
New York Times, "Taiwan has relied on its dominance of the microchip industry for its defense," and that, "because its semiconductor industry is so important to Chinese manufacturing and the United States consumer economy, actions that threaten its foundries would be too risky." In 2022, former U.S. Deputy National Security Advisor
Matthew Pottinger challenged the existence of a "Silicon Shield" arguing that China does not behave in ways which appear rational to audiences in democratic countries. Some analysts and policymakers in the U.S. even conflate the importance of TSMC to the decision-making process of the Chinese leadership in their plans in militarily unifying Taiwan, to the extent that they advocated a controversial plan to destroy Taiwanese semiconductor fabrication facilities in the event of a successful Chinese invasion of Taiwan to prevent China from gaining control of the industry, due to concerns that China could seize the facilities and leverage them for future economic or military advantages. International policy measures have been taken in attempts to ensure the longevity TSMC's manufacturing output by third parties such as the United States. Through policy efforts such as the
CHIPS and Science Act, the United States and Taiwanese governments have taken steps to bolster TSMC's manufacturing capability on U.S. soil. Such policy efforts were put in place after
geopolitical tensions between the United States and China demonstrated a potential weak point in the nation's reliance on foreign manufacturing. enhancing their semiconductor production capabilities on international land. standing next to President
Donald Trump and
Howard Lutnick, announcing that TSMC is planning to invest in the U.S., 3 March 2025 In April 2024, the
United States Department of Commerce provided TSMC Arizona with a grant for a total of $6.6 billion in funding under the
CHIPS and Science Act. Additionally, the two countries are investing in joint research initiatives and workforce development programs to provide a steady pipeline of skilled workers for the semiconductor industry. Some TSMC managers have attributed the plant's troubled development to cultural clashes between TSMC's management and American workers. U.S. President
Donald Trump criticized Taiwan for its dominance in the U.S. semiconductor industry. In February 2025, China accused Taiwan of using its semiconductor sector to gain political favor from the United States. According to U.S. think-tank
German Marshall Fund, Trump's approach (or the general approach of the U.S.) has negatively affected Taiwanese populations' perception of the U.S. According to a March survey conducted by Global Views Research, a majority of respondents in Taiwan believe that TSMC’s move to produce advanced semiconductors in the United States diminishes the island’s "silicon shield" and viewed the company’s U.S. investment as the result of American political pressure. This assessment contrasts with statements by Taiwanese President
Lai Ching-te, who has denied that the decision was made under external coercion. Public concern centered on the possibility that relocating a significant share of TSMC’s most advanced chip production to facilities in the U.S. could reduce the strategic incentive for the United States to defend Taiwan in the event of an attack by China. The think-tank warned that such a self-serving approach will potentially weaken the resolve of Taiwanese citizens to defend themselves. ==Environmental and sustainability issues==