this young couple is worried about online predators stalking their social media accounts, so they call their representative and express their concerns, and asks if or a law to help protect them.
every law starts as a bill and is introduced in either the senate or the house of representatives. in the senate they vote and debate on this bill. these bills also go through committees and sub committees
from the senate, after a majority vote, it goes to the house of representatives, where they have to agree and vote yes on the bill. That's not before it goes through committees and gets passed. Here they might add or change some things or decide against the whole bill. After that it needs both houses majority vote A bill needs both the senate and house to agree and a president signature to become law.
After the senate and house both agree on a bill, they send it to the president who can then veto it, sign it, or pocket veto. the process of ten days where the president does nothing and the bill becomes law. the house and congress can do the two-thirds rule if the president veto's a bill.
most bills don't become laws, it can take months, years, heck maybe even a decade. However, the constitution keeps it fair and the power equal in this process.