The FBI was doing their job investigating Russian operations against the United States of America, with which they have been tasked for decades; during the course of that investigation, people connected to Donald Trump appeared on the radar. Donald Trump’s own actions and words bolstered the case and the urgency of the agency to get to the bottom of it, for the sake of national security.
This isn’t a big political scandal, it may turn out to be the biggest political scandal in the history of this country—a fact made clear by Natasha Bertrand, national security expert and politics writer for The Atlantic.
"Stepping back for a minute: If no other reporting existed on Trump/Russia, the fact that the FBI started a CI investigation to determine whether or not the sitting president of the US was either comprised by or an agent of Russia, it would be the biggest political story...ever."