The nation returned to isolationism
Congress had to approve of military appointments.
The War Powers Resolution was made so that the President of the United States could not commit to an armed conflict without the consent of the Congress.
The Civil Rights Act ended discrimination/segregation in employment, promotions, firing, voter registration, usage of federal funds, and public places based on race or sex.
Well, fear is created when there is a threat. WW2 Had just ended, so of course America did not want any other nation to become more powerful than them, for the idea that it would end up being like Germany. Americans also wanted to protect democracy, so communism was a major threat to the USA and it's beliefs. Naturally, America wanted to prove dominance to the USSR, thus the beginning of the cold war.
The population decreases daily with all there murders