He pretty much had to, they would have just overruled the veto with a 2/3 majority anyway. IIUC there's still the option of a pocket veto, where he ensures that Congress is adjourned when the bill is supposed to become an act - but it looks more like he's trying to get them to vote on the individual items that he annotated, to put their names next to those things.

He pretty much had to, they would have just overruled the veto with a 2/3 majority anyway. IIUC there's still the option of a pocket veto, where he ensures that Congress is adjourned when the act is supposed to become a bill - but it looks more like he's trying to get them to vote on the individual items that he annotated, to put their names next to those things.