The fact that North Vietnam had almost taken over Saigon in a blistering attack called the Tet Offensive didn't help either. Johnson also saw a challenge for the Democratic ticket from Eugene
McCarthy and Robert Kennedy, and the nation, as well as the Democratic party, was starting to be split by Vietnam.
LBJ refused to sign an order for more troops to Vietnam.
Then, on March 31, 1968, Johnson declared that he would stop sending in troops to Vietnam and that he would not run in 1968, shocking America.
