Louis Prevost’s Facebook posts — no longer publicly viewable — suggest that he has embraced some of the most common complaints and conspiracy theories of the right.
The university expanded its ongoing suit after the Trump administration said it would stop issuing grants to the school and promised to take another $450 million.
Regulators seeking to end the use of electric shock devices on people with disabilities have been swept into the government upheaval under President Trump.
A provision in the House Republican budget bill would provide public money for private education and home-schooling, something many Democratic-led states have resisted.
David Hogg has faced sharp criticism for his plan to fund challenges to incumbent Democrats, but a D.N.C. vote on Monday began with an earlier complaint about the procedures used in an internal party election.