Jeff Sessions is key to Trumps future, hypotheses. Trump gets support from Republicans because he was voted in and to some degree helped keep Republicans in office by his appealing message. Since then Trump's actions and words have greatly irritated Republicans and eroded support for the party. There is some visible circling of wagons around the party against Trump. Jeff Sessions was a powerful Senator and despite controversy was strongly supported by this fellow Senators. His early endorsement of Trump was the reason Trump was even taken seriously, so his appointment as Attorney General was seen as a reward and something the Senate Republicans where proud of. That was 5.5 months ago, and the optimism is all but gone. I think if Sessions is forced out of office, the Senate will completely turn on Trump, ending any chance of signing any major law or much of anything else.