You’re right about the 51, though
It’s just that it a quorum is decided by Senate Rules
Each House shall be the Judge of the Elections, Returns and Qualifications of its own Members, and a Majority of each shall constitute a Quorum to do Business; but a smaller number may adjourn from day to day, and may be authorized to compel
No, the Constitution set a quorum.
Staes were leary of letting the Senate set it’s own.
Pretty sure a discussion is in Madison’e Notes on the convention.
bingo.
nice explanation here:
https://en.wikipedia.org/wiki/Standing_Rules_of_the_United_States_Senate,_Rule_VI
The RATs walk out, they can be compelled back in. Course, they have to be found, first.