They MAY do so as a pre-requisite for their accessing certain classified information during their terms of office after they are elected. HOWEVER, there is no Constitutional requirement that these people be eligible for a security clearance to be elected.
To prove citizenship or for security and background checks.
YES..................................
Reagan
Social Security Improvement
No. Congress has its own special security force.
They contact the UN Security Council, President Truman did this when he was in office.
almost always
Spending that congress and the president have no power to change directly. Examples: Social Security, Medicare, etc.
Goldwater-Nichols ActGoldwater Nicholas act
Goldwater-Nichols ActGoldwater Nicholas act
The President can not spend money unless Congress appropriates it. The President can only ask Congress for what he wants. In the case of armies he might try to scare Congress into action by pointing out threats to national security. He has access to vast amounts of intelligence information which he can use to back up his requests.
no