Brad Parscale, President Trump's 2020 campaign manager, tweeted Tuesday that Trump should fire Attorney General Sessions and end the Mueller investigation, calling it "phony."

Parscale later doubled down on his criticism, responding to a conservative Twitter account that said Sessions' early support of Trump helped win him the primaries. Parscale called the suggestion "Total crap."

Go deeper: Trump's torch-it-all strategy ... Being Jeff Sessions.