Accuse them of treason and demand an investigation into their treasonous acts to destroy your presidency.
The warrant was prepared by a fed prosecutor who was appointed by trump. It was signed off on by a Fed judge who was appointed by trump. Do you honestly think either of them would have signed off without compelling evidence?
Umm, nwsun, Mueller's mission is to determine if Trump and others committed any crimes. Period. Mueller's mission is to uphold the law. That as you must concede has not been a primary mission of Trump's - ever.
Nunes' cmte's negligent lack of interest in getting to the bottom of this scandal arguably has more of a treasonous taint than any actions of those you accuse.
Then again what do you care of their abrogation of their constitutional checks-and balances responsibility, eh.