by using the forces of cheese
the president can veto laws p
By declaring laws passed by Congress
The president does not have the power to initiate laws-- only Congress can do that.
The supreme court can make sure the president doesn't abuse his power by deeming laws bills passed by the president unconstitutional.
the congress
The power of Congress to make laws and the power of the president to execute laws are closely related. The enumerated power of Congress to legislate and establish laws can be seen as parallel to the broad executive power of the president to enforce and execute those laws. Together, they form a system of checks and balances that allows both branches to have a role in the governance of the country.
The main power of the President of the US is to execute the laws of the United States. The President also has the power to veto any laws passed by Congress.
The president does not have constitutional power to initiate laws or bills.
The president has the ability to check the power of the bureaucracy. He does this by vetoing bills that have made it through congress if he disagrees with them. This keeps congress from passing laws unchecked.
Can declare laws unconstitutional
The job of the president is to enforce the laws. The job of Congress is to legislate laws. Together they do the business of the government. The president doesn't share power with congress, but has his own duties. Congress checks his power by not passing laws, not approving appointments, approving the budget or not, and he needs approval of congress to declare war. Constitution tries to make a balance of power between the branches. Sometimes one branch will try to gain more power from other branches. Watergate changed the office of the president and it's power.
This deals with the system of Checks & Balances. The President can "check the authority of Congress" by rejecting a unconstitutional law proposed by Congress. this process is called veto.The President checks Congress when he vetoes a bill that the Congress has passed. Congress can check him if a 2/3 majority votes to override his veto.Also, the President can check Congress by using the media (the "bully pulpit") to set the agenda for Congress. Presidents also tend to have success with Congress proportional to their approval rating with the public. Thus, if a president has a high approval rating, it is likely that Congress will be willing to help him accomplish his goals.