It is controversial because the President can pardon anyone! Take Nixon and Goldwater for example. Nixon was convicted of spying on th opposite party. Nixon stepped down, but was still charged. When Goldwater became president, he pardoned Nixon of all of his charges which caused a huge uproar. That's fair, right?
It is true King was the second american whose birthday was observed as a national holiday
Communism expanded. At the end of the war, North Vietnam conquered South Vietnam in 1975. The north and south united under one government. Communism spread and is one of the few remaining communist countries.