As a result of the twenty second amendment presidents can

a- serve a maximum of tow terms in office
b- declare war without congressional approval
c veto constitutional amendments that have been approved by states
d- prevent pay raises for members of congress

As a result of 22nd amendment, presidents can:

A - serve a maximum of two terms in office

Article II, Section 2 says the president is the commander-in-chief of the army, giving them the power to declare war without approval.

Article I, Section 7 gives the president veto power.

The 27th Amendment prevents Congress from giving themselves immediate pay raises.

well the lessons we can learn is how quickly our fragile freedoms can be overcome. mccarthy rose to power in 1950 of a tsunami of anti-communist hysteria, brandishing a lost of "known communists" in the state department, and held public trials to enhance his political clout. he had fallen from power but only when his attacks were against the u.s. army broadcast to millions of americans to their homes exposing his indecent persecution of the innocence of people. the senate censured him in december 1954 disgraced and discredited, he had died three years later at the age of 47..i hope my answer has you.. good day to you..