We have two undisputed cases, through the indictments of Michael Flynn, the former national security adviser, and George Papadopoulos, the former foreign policy adviser. It is difficult to see how the two men could expect to get away with it. Who would lie to the F.B.I. if one’s colleagues, interviewed at a later date, would contradict the false account of the same set of events?

We now know Mr. Flynn’s phone call during the transition in December 2016 with Sergey Kislyak, the Russian ambassador, was coordinated with other senior transition officials meeting at Mar-a-Lago, in Florida. When it came to Mr. Flynn’s F.B.I. interview, a story was already in place. The day before, Sean Spicer, the White House press secretary, had adamantly denied that Mr. Flynn spoke to the Russians about sanctions. So to get away with lying to the F.B.I., whether or not he alerted White House officials to the meeting beforehand, Mr. Flynn would presumably have to count on the others sticking to that lie, too.

The same goes for Mr. Papadopoulos, who risked going to prison for lying to the F.B.I. As with Mr. Flynn, his communications with the Russians were well known and approved by senior campaign officials.

The pattern goes on from there. If Mr. Flynn was counting on others to cover his tracks, he seems to have calculated correctly. For example, K. T. McFarland, the former deputy national security adviser who also served on the transition team, told the Senate Foreign Affairs Committee, in writing, that she was not aware of Mr. Flynn’s contacts with the Russian ambassador. That was a lie, disproved by court documents revealing her close strategizing with Mr. Flynn before and after the call and by the news report of her email coordinating on the matter with senior members of the Trump transition team at Mar-a-Lago. (Mr. Spicer was one of the email’s recipients.)

Jeff Sessions also infamously lied to federal authorities or at least risked perjury. During his confirmation hearings for attorney general and in subsequent written answers to a senator, Mr. Sessions denied having communications with the Russians. As we now know, The Washington Post revealed that Mr. Sessions met with the Russian ambassador at least twice — and United States intelligence intercepted the Russians saying that they had spoken with Mr. Sessions about the election.