It was the "War Brides Act" that allowed foreign wives of servicemen to enter the U.S. outside of immigration quotas, since this was only seen as fair for those who were serving.
It lowered the voting age so young people who couldn't vote before now could have a say.
Lee Harvey Oswald was responsible for killing/shooting John F. Kennedy.
He went to Texas to raise more Democratic Party presidential campaign funds, wanted to begin his little 'quest' for reelection, and because the Kennedy-Johnson ticket just barely won Texas.