St Patrick's Day, while not a legal holiday in the United States, is nonetheless widely recognized and observed throughout the country as a celebration of Irish and Irish-American culture. Celebrations include prominent displays of the color green, religious observances, numerous parades, and copious consumption of alcohol. The holiday has been celebrated in what is now the U.S since 1601.
On 17 March 1960, the CIA put forward their plan for the overthrow of Castro's administration to the U.S. National Security Council (NSC) where US President Dwight D. Eisenhower lended his support. The first stated objective of the plan was to "bring about the replacement of the Castro regime with one more devoted to the true interests of the Cuban people and more acceptable to the US in such a manner to avoid any appearance of US intervention."