Help me answer all of these i’ll give brainlist ! 1: congress has the power to nominate an individual to be Secrety of Defense

yes or no?

2: congress has the power to send troops to South Africa to stop a riot

yes or no?

3: congress has power to rule laws unconstitutional

yes or no?

4: congress has the power to loan student money and get back interest in return

yes or no?

5: congress has the power to approve the sale of firearms to mexico

yes or no?

6; congress has the power to build a wall between mexico and arizona

yes or no