Why did nixon order us forces to mine north vietnamese harbors in 1972?

To avoid the supplies to north vietnam.

Explanation:

Mr. president Richard Nixon  did announce an attack  during two week at the north of vietnam. it was in 1972.

The reason registered is that peace talk between the United States and North if Vietnam collapsed.

the answer is option a.

the correct answers are: 1) lay and collect taxes and duties; 2) pay debts; 5) borrow money;   6) regulate commerce with foreign nations.

article 1, section 8. refers to the powers of congress. according to the united states constitution: “the congress shall have the power to lay and collect taxes, duties, imposts, and excises, to pay the debts and provide for the common defense and general welfare of the united states.”