Democrat Robert Zimmerman, who lost to lie-covered Rep.-elect George Santos (R-N.Y.) in November, joked about his former opponent’s fib-filled campaign trail as he called for the House Ethics Committee to investigate him on Thursday. (You can listen to his remarks below.)

Zimmerman, who called on Santos to resign and ran against him in a special election earlier this week, echoed calls for an investigation as he made a jab at the Republican over his history of fibs on Thursday.

“We call upon Congress and demand Congress conduct a House ethics investigation into George Santos… making sure that more people come together, making it clear that George Santos is not ― if his name is George Santos ― making sure that George Santos does not belong in Congress…” the New York Democrat said.

Zimmerman added that the controversy isn’t a matter “Democrat or Republican politics” but rather it’s a call to protect democracy.

“What’s at stake before us is not about the results of a congressional election,” he said. “What’s at stake before us is protecting our democracy, restoring our confidence in the integrity of our public officials and most of all, protecting the American dream.”