Answer:
The Senate
Step-by-step explanation:
All American laws start off as bills.
After a bill passes the US House of Representatives ("the House") by majority vote, it would get referred to the US Senate. There, the bill is discussed in a committee and then reported to the floor for voting.
If the majority vote is "yea" (yes), then the bill will pass and then be sent to the president, who then signs it into law or vetos it.
Hope this helps you!