In a letter to be delivered Monday and obtained by POLITICO, 11 progressive groups warn that the 48-member minority “must get out in front of this nomination process and refuse to be bullied by President Trump as he stampedes on the rights of Americans.”

Since Neil Gorsuch was nominated on Jan. 31, “Democrats have failed to demonstrate a strong, unified resistance to this nominee despite the fact that he is an ultra-conservative jurist who will undermine our basic freedoms and threaten the independence of the federal judiciary,” wrote the groups, led by the abortion-rights advocates at NARAL Pro-Choice America. “We need you to do better.”

Advocates describe Gorsuch as “more conservative” than the late Justice Antonin Scalia, whom he would replace, and more concerned with “propping up corporations and special interests” than defending the public.