Recently, in the news, there has been much talk of Brexit votes. In particular, the votes of the House of Commons on specific amendments, like amendments in which the Commons supports the PM's deal, or votes on a no deal, or to extend the exit date. All of these amendments are spoken of in the same context. But what Bill are these amendments actually amending?
what Bill are these amendments actually amending?
They are amendments to a government motion for debate.
For example this motion:
That this House declines to approve leaving the European Union without a Withdrawal Agreement and a Framework for the Future Relationship on 29 March 2019; and notes that leaving without a deal remains the default in UK and EU law unless this House and the EU ratify an agreement.
On which MPs will each vote aye or nay at 7 p.m. today 13th March 2019.
I agree with @redgrittybrick 's answer, and would only add, that the fact that a House of Commons resolution is voted for, is in itself no guarantee that what they vote for is actually within their legal or constitutional power to legislate or achieve.
Thus, for example, their disapproval of a no-deal 'Brexit' does not prevent that outcome, which depends on the operation of EU law.