Over the next few years there are going to be, presuming we have not already devolved into a banana republic, several Dumpster fires' worth of investigations into Donald Trump and his associates. There are the Russia connections. There's the failure to divest from his businesses, and the Constitutional prohibition against foreign gifts that Trump is even now violating due to the profit he's garnering from his hotel business promoting itself as the way for foreign diplomats to properly ingratiate themselves to Trump. There's the tax returns we haven't seen yet, which may or may not have been withheld because they show behavior inappropriate of a president. There's the serious question of his own mental capacity to make decisions, and his obsessions with retaliation, revenge, and self-promotion. There are shady campaign trail dealings, and orders to government agencies that may or may not violate the rights of workers in those agencies, and take your pick.
Sen. Jeff Sessions was nominated by Donald Trump to be the nation's next attorney general. Jeff Sessions climbed aboard the Trump campaign wagon early and clung there tenaciously, which is the reason he was nominated for the post, and Jeff Sessions says he sees no reason to recuse himself from investigations into Trump once he’s on the job. Why would he?
Sessions said in written responses to members of the Senate Judiciary Committee that he is "not aware of a basis to recuse myself" from investigations into incidents involving the president, such as Russian meddling in the presidential race or issues relating to conflicts of interest. [...]
“If merely being a supporter of the President’s during the campaign warranted recusal from involvement in any matter involving him, then most typical presidential appointees would be unable to conduct their duties,” Sessions told Sen. Patrick Leahy (D-Vt.) in written responses to the Senate Judiciary Committee.
So if the FBI or CIA comes to the conclusion that, to throw an example out there, members of Trump's campaign team illegally coordinated with Russian hacking attempts, Jeff Sessions would be the person deciding whether to prosecute the crime or brush it aside. If it just happened to turn out that Donald Trump's children were using the Oval Office to promote the family businesses and brands, Jeff Sessions would be the man on the case.
So fret not, America. Jeff Sessions will be keeping watch. Jeff Sessions will let us know if anything untoward is going on, and Jeff Sessions will decide how American law ought to apply to Donald J. Trump and his various hangers-on.