. After the war in 1946, the
first elections were held. The
Liberal presidential nominee that time was then-Senator
Manuel Roxas, who persuaded Roy to run for
Congress seat. Roy agreed only after being promised that if they won, Roxas would consider supporting the 70-30 Rice Crop Sharing law he was planning to author. This law would provide that 70% of the rice crop be given to the tenant farmers and 30% to the landowners in all rice-producing regions of the Philippines and, after studying the matter, Roxas found that it had its merits. The
1946 election was a very difficult one. Roy was elected to congress as representative of the
1st district of Tarlac. He was the lone Liberal Party candidate to win in Central Luzon. Over the next 16 years, Roy was elected to four consecutive terms as congressman of Tarlac's 1st District. He was instrumental in the drafting and passage of important finance and socio-economic measures which he authored and sponsored on the floor of the House of Representatives from 1946 to 1961, among which are; the
Central Bank Act,
Rehabilitation Finance Corporation Act (R.A.85), the
Development Bank Act, the General Banking Act, the Rural Banks Act (R.A.720), Philippine Veterans Bank Act (R.A. 3518), the
Philippines Deposit Insurance Corporation Act (R.A.3591); the Industrialization Act (R.A.901); Ramie Incentive Act, Agricultural Tenancy Act, 70-30 Rice Share Tenancy Act, Land Tenure Act, the Land Reform Code (R.A.3844), the Anti-Graft and Corrupt Practices Act (RA3019), Savings and Loan Association Act (R.A.3799), the Congressional 5-Year Development Plan, Tax Exemption to Basic Industries, Laurel-Langley Agreement, the Tariff and Customs Code of 1957, an Act providing the creation, organization and operation of an internal audit service for all departments, bureaus and offices of the National government otherwise known as the Internal Audit Act (R.A.3456) are among some of the measures he had authored and sponsored. He was a member of the Philippine Council of Leaders, the Development Council, the
Council of State and Security Council. In the
general election of 1961, Roy was elected as senator for the
Fifth Congress. He was one of only two
Nacionalista Party senatorial candidates who was elected. In the November 14, 1967 Senate election, Roy garnered the highest number of votes in his re-election bid for senator receiving over 51 percent of the votes and more than half a million votes over his nearest pursuer. He was the lone incumbent to defend his seat. The Nacionalista Party won seven of the eight possible senate seats. As senator, Roy was elected as the
Majority Floor Leader and later that year
President Pro-tempore of the
Sixth Congress in 1966 and
President Pro-tempore of the
Seventh Congress. He was a member of the
Commission on Appointments and chaired the Committee on Ways and Means, Committee on Rules and Foreign Relations Committee His efforts failed, however, and the Seventh Congress was eventually abolished when Marcos declared
martial law in 1972. ==Other==