The us president can check congress by

The president can check Congress by vetoing a bill. This is where I got my answer from https://www.mshomi.com/separation-of-powers-president-congress-usa/

Explanation:

there are indirect ways of affecting state laws   by with holding funding's. and that's why we have a 55mph speed on the high way with a design of 70mph speed.

answer; knowledge,reason,and judgement;