President Trump tweeted that Michael Cohen, his former lawyer and “fixer”, won’t flip on him. Putting aside for the moment why the President would say this if Cohen didn’t have incriminating evidence against him - because one could only “flip” on someone if they did - let’s examine why people charged with crimes cooperate with law enforcement.
In coverage on Gen. Michael Flynn options for withdrawing a guilty plea in the Robert Mueller investigation, Fox News reached out to Attorney Robert Stahl for insights on plea reversals. In Alex Pappas' Feb. 20, 2018 article, "Flynn urged by supporters to withdraw guilty plea as judge's actions raise eyebrows,", Robert Stahl was quoted as saying:
"Withdrawing a federal plea is extremely rare and very difficult."
"There are lots of factors that go into a decision to plead guilty … In Flynn's case, there are also the factors of other potential charges that were not pursued by the government in exchange for his plea entered."
Just the other day, "Bridgegate" cooperator and former Port Authority of New York and New Jersey official David Wildstein, was sentenced in federal court to probation. The two defendants that he cooperated against were sentenced to 24 months and 19 months in federal prison. Despite the fact that Wildstein pled guilty to two counts of conspiracy for his role in the offense, and faced several years in prison, the sentencing judge granted the government’s downward departure motion for a much more lenient sentence – in this case probation.