The Supreme Court is scheduled to rule on those subpoenas in June. I doubt they would vote to change the entire balance of power in the Republic just for one crappy little 6 month more term in office. These guys are not Senators looking only to the next election. They know anything they decide applies to future Democratic Presidents as well. They are NOT going to decide the President is all-powerful just before a Democrat wins the office.

So there may well be another House investigation when we get all those insiders spilling the beans. Just in time for the General Election, too!