IIRC If the president doesn’t sign a bill it is automatically passed, only requiring a >50% majority. The president has to take action in order to veto a bill, and only then does Congress have to have a 2/3 majority to override the veto
Yes, I know, I’m fun at parties, but it’s important to know how your government works, assuming you’re from the US, that is.
Edit: according to USA.gov:
…if the president does not sign off on a bill and it remains unsigned when Congress is no longer in session, the bill will be vetoed by default. This action is called a pocket veto, and it cannot be overridden by Congress.
But according to congress.gov
If the president declines to either sign or veto it – that is, he does not act on it in any way – then it becomes law without his signature (except when Congress has adjourned under certain circumstances).