Rep. Nancy Mace (R-SC) filed a resolution Wednesday to expel a House Democrat charged with assault of federal officers by the Department of Justice. The expulsion resolution came after Rep. LaMonica McIver (D-NJ) was charged by a federal prosecutor for a protest at an Immigration and Customs Enforcement detention facility in New Jersey.

McIver has denied any wrongdoing and has accused federal agents of escalating the situation by arresting the mayor.

“No one is above the law — politicians or otherwise,” Ms. Habba said in a statement. “It is the job of this office to uphold justice impartially, regardless of who you are. Now we will let the justic...