Environmental Protection Agency (EPA) Administrator Michael Regan clashed with conservative firebrand Rep. Lauren Boebert (R-Colo.) during a tense House hearing — asking her if she understood the Supreme Court’s ruling that overturned a legal precedent known as the Chevron deference.

Boebert, during an Oversight and Accountability Committee hearing Wednesday, asked Regan whether the EPA would repeal any “unconstitutional regulations” enacted by “rogue bureaucrats” because of the decision.

In response, Regan asked her, “Do you understand the ruling?”