You can sign up for Medicare beginning three months before you turn 65, and coverage can start as soon as the first day of your birthday month. The initial enrollment period lasts until three months after your 65th birthday.
A: An executive agreement is an arrangement established by the President of the United States between the US and another foreign nation or agency. The answer is D: pact with president and foreign heads of state.
An executive agreement is an agreement entered into between a foreign government and the executive branch of the United States. Although the agreement binds the United States with as much force as a treaty, it is not as formal as a treaty and does not require Senate approval.