Two law firms filed lawsuits Friday to block White House executive orders that targeted them for their ties to lawyers involved in an investigation into Russian interference in the 2016 election, while a third firm cut a deal to avoid being targeted by the Trump administration.

Law firms Jenner & Block and WilmerHale sued to challenge President Donald Trump’s orders against them, while counterpart Skadden avoided action by the administration with a promise to do $100 million in pro bono work.

The president has attacked law firms for “frivolous” litigation. But his actions could undermine the basic right of Americans to sue their government.