If the President is breaking the law or is unable to do the job well, how can Congress check the President's
Power?

The veto allows the President to “check” the legislature by reviewing acts passed by Congress and blocking measures he finds unconstitutional, unjust, or unwise. ... Congress can override a veto by passing the act by a two-thirds vote in both the House and the Senate. (Usually an act is passed with a simple majority.)

Explanation:

small european communities with shared traditions consolidated into large new states (apex)

probably that america is racist