President Donald Trump and his appointees have been accused of flouting courts in a third of the more than 160 lawsuits against the administration in which a judge has issued a substantive ruling, a Washington Post analysis has found, suggesting widespread noncompliance with America’s legal system.

Plaintiffs say Justice Department lawyers and the agencies they represent are snubbing rulings, providing false information, failing to turn over evidence, quietly working around court orders and inventing pretexts to carry out actions that have been blocked.