The Bay of Pigs Invasion was a foreign policy embarrassment for the Kennedy Administration.
When John Kennedy assumed the presidency after Dwight Eisenhower, he was faced with the pressure to act on Cuban dictator Fidel Castro's growing relationship with the Soviet Union (yet another of US' formidable enemies).
His senior advisers urged him to authorize the attack on Cuba and initiate a movement to overthrow Fidel Castro. This played on Kennedy's foreign principle which is for Democratic countries such the US to show a strong force against dictatorships like Castro's. In April 1961, the invasion at the Bay of Pigs failed extremely. Castro was quick to mobilize his militia to counter Kennedy's botched plan. Aside from this, Kennedy made some worst decisions that nailed the coffin shut. Thus the Kennedy Administration suffered a lot of damage due to this failure.