What sort of silliness do the Americans have with all their amendments? Here, a bill is introduced and voted on by the 2 chambers of the legislature, either of which can amend the bill. Once a bill passes the first chamber, it's voted on in the second. If the second chamber makes any amendments, they have to send the bill back to the first chamber to be voted on again.
As a result, a bill getting amended in the second chamber is relatively uncommon and you can never end up with a bill passing after reconciliation that would not have gotten a majority vote in both chambers.