That's not entirely true. Having the Whip removed was a very unusual move by PM Johnson, which is why it gained so much attention. The US Congress is based on the Westminster system. In effect, MPs are allowed to vote however they feel, but there can be consequences to them voting against the party line.
Which is also the case in the US, the party could run a primary challenger to them in the next election.
It's the same case in most parliamentary systems, it's usually right of MPs guaranteed in a constitution. Tradition and procedures, however, tend to ensure party line votes, but there are no legal ramifications, if an MP rebels against the party line.
Which is also the case in the US, the party could run a primary challenger to them in the next election.
It's the same case in most parliamentary systems, it's usually right of MPs guaranteed in a constitution. Tradition and procedures, however, tend to ensure party line votes, but there are no legal ramifications, if an MP rebels against the party line.