Protesters disrupt a Senate Judiciary Committee hearing entitled "Oversight of Immigration Enforcement and Family Reunification Efforts" on Capitol Hill in Washington, US, July 31, 2018. (Photos: VCG)

Senate Judiciary Committee Chairman Charles Grassley (R-IA) raps the gavel to being a hearing in the Hart Senate Office Building on Capitol Hill July 31, 2018 in Washington, DC.

Witnesses are sworn in during a Senate Judiciary Committee hearing entitled "Oversight of Immigration Enforcement and Family Reunification Efforts" on Capitol Hill in Washington, US, July 31, 2018.