1862 was the last time in the US Senate. In the same era, the US Senate expelled 10 Southern US Senators:
On July 11, 1861, the Senate quickly passed Senate Daniel Clark's resolution, expelling all 10 southern senators by a vote of 32 to 10. By the following February, the Senate expelled another four senators for offering aid to the Confederacy. Since 1862, despite considering expulsion in an additional 16 instances, the Senate has removed no member under this provision.
Looks like they're taking up the tricks of their Demonrat ancestors. Civil war coming, again. Mass death. Again.
I just read a supreme court case where failure to seat a duly elected senator for other than Constitutional ineligibility is not allowed.