The united states began a trade embargo against cuba in the 1960s to

The U.S. ratcheted up sanctions on Cuba in 1960 and 1961 with President John F. Kennedy making the embargo official in 1962. Diplomatic relations between the United States and Cuba broke off in 1961  with tensions increasing after Cuba signed a trade agreement with the Soviet Union.

Opposition to the nra came to a head in 1935, when the conservative supreme court declared the agency unconstitutional, claiming the nra gave the executive branch regulatory powers that belonged exclusively to congress. this decision began a series of court decisions that overturned key elements of the new deal.