think deeper
if he did sent them back, then the scam would have continued throughout and no one would be the wiser about [THEIR] plans since it would be business as usual
by not sending them back and certifying the results, it would give president to the fraud committed and therefor treason since the results would have to be discovered in court, not in Congress, and reveal everyone in the conspiracy who allowed the fraud to take fruition,
why do you think the Senator froze mid speech?
it's called rend: to give up a favorable position for a striking blow down the line aka the pincer attack
[They] are surrounded