Furthermore, given Robert Mueller's past, one must wonder why he's even allowed to investigate President Trump.
Back in 2006, the Justice Department found evidence that Mueller, then the FBI Director, falsified testimony about the bureau's surveillance on an anti-war protest in 2002. Specifically, the DoJ discovered that Mueller improperly opened and expanded investigations into certain Left-wing groups (via Mercury News).
Put another way, Mueller is a liar who illegally spied on Americans.
Other revelations about Mr. Mueller also call his integrity into question.
In connection with the 2006 investigation into the FBI's illegal surveillance of an anti-war protest in Pittsburgh, Mueller committed perjury by claiming the FBI was conducting an anti-terrorism investigation into The Thomas Merton Center, a pacifist Catholic organization (via Got News).