MEK was designated a terrorist organization by the US until it was de-listed in 2012. After the overthrow of its patron, Saddam Hussein, in 2003, the group became mostly irrelevant and no figure of repute in Iranian politics would go anywhere near it after the evidence of the major abuses it perpetrated was laid bare over the last few years.
John Bolton also has a long history of support for MEK and is a frequent guest at its rallies. In March 2015, as the talks surrounding the Iran Nuclear Deal were reaching a sensitive stage, he called for a military attack on Iran and “vigorous American support” for MEK “aimed at regime change in Tehran”. Last summer, Gingrich spoke at MEK’s rally in Paris alongside Turki bin Faisal, the former head of Saudi intelligence. Gingrich went as far as to solemnly bow down to MEK’s leader, Maryam Rajavi, calling her by her favored title, “President-elect”. When running for the Republican party presidential nomination in 2012, Gingrich openly called for “replacing the leadership of Iran”, saying that this could be accomplished within a year.