The U.S. President is never elected by popular vote. In fact, there have been four Presidential elections in U.S. history in which the winner of the election was not the candidate who received the most popular votes (in 1824, 1876, 1888 and 2000).
The Executive Branch is leads on outlining presidential roles so it probably decides the presidential electing process.
to win the presidential election a candidate needs 270
The Judicial Branch decides whether or not a law is unconstitutional.
The legislative branch (Congress) decides on what should be law and makes the laws.
The Judical Branch
The judicial branch.
The legislative branch has the power to override presidential vetoes. In so doing, the presidential branch is being checked.
The Executive branch decides is a treaty is unconstitutional
The legislative branch handles money that has to do with presidential funding.
The legislative branch
The Executive Branch is the President
The judicial branch decides if laws are legal and it's called Checks and Balances.