"The Justice Department usually has very broad standards for the appearance of impropriety that would trigger at least the inquiry into whether there was a conflict of interest," McCarthy said.

"The Justice Department usually has very broad standards for the appearance of impropriety that would trigger at least the inquiry into whether there was a conflict of interest," McCarthy said.

Garland's son-in-law reportedly co-founded and works with the company Panorama Education. An educational workshop released by the company includes materials which promote critical race theory and fixate on overcoming "white supremacy," according to Fox News.

"The idea is Garland's son-in-law is profiting lucratively from peddling this stuff to the schools. And Garland, even though the Justice Department doesn't appear to have jurisdiction to do what it's done, is sicking the FBI on parents who are dissenting against these kinds of materials," McCarthy added.

Kentucky Republican Sen. Rand Paul also addressed the controversy recently.

"The punk who assaulted the policeman defending my wife and I in DC went free but the Biden Admin. labels concerned parents as 'domestic terrorists?'" Paul tweeted alongside a post from Asra Q. Nomani urging parents to contact the National Association of School Boards in response to a controversial letter the association sent to President Joe Biden on Sept. 29.