President Donald Trump on Thursday moved to address what he called an “anti-democratic takeover” of federal courts through “forum shopping” by activist groups, issuing a directive to executive agencies to demand financial security from plaintiffs who seek out friendly judicial venues to file lawsuits against federal policies.

A new memorandum from the White House instructs federal agencies to enforce Federal Rule of Civil Procedure 65(c), which the Trump administration says requires litigants seeking injunctions against the government to post security for possible costs and damages if their lawsuit fails.