The economy experienced steady growth, low inflation and a drop in unemployment rates during Kennedy's tenure. Kennedy adopted Keynesian economics and proposed a tax cut bill that was passed into law as the Revenue Act of 1964. The Food for Peace program became a central element in American foreign policy, and eventually helped many countries to develop their economies and become commercial import customers.Having chaired a subcommittee on Africa of the Senate Foreign Relations Committee, Kennedy had developed a special interest in Africa.