A spokesperson for the Met said Ocasio-Cortez was a “guest of the museum.”

The AAF’s complaint, obtained by Fox News, asks the Office of Congressional Ethics to “immediately open an investigation” into Ocasio-Cortez and whether she accepted an “impermissible gift” to attend the gala or violated any campaign finance laws.

“Without prompt investigation and enforcement of Congressional Rules, the American people are likely to lose faith in the ability of Congress to police its members,” the complaint says.

The complaint states that since Ocasio-Cortez described her attendance at the Met Gala as part of her official duties, the “receipt of the gift” must fall under either the widely attended event or charity event exemptions as defined by the House rules.