House Homeland Security Chairman Michael McCaul (R-Texas) on Wednesday said he thinks Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE could be impeached over her private email server if she reaches the White House.

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McCaul, who has been mentioned as a possible 2018 primary challenger to Sen. Ted Cruz Rafael (Ted) Edward CruzTrump argues full Supreme Court needed to settle potential election disputes Press: Notorious RBG vs Notorious GOP The Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy MORE (R-Texas), said during an interview on Fox News that the FBI investigation into Clinton's use of a private server while secretary of State will continue whether the Democratic nominee becomes president or not.

"But assuming she wins, and the investigation goes forward and it looks like an indictment is pending, at that point in time under the Constitution, the House of Representatives would engage in an impeachment trial," he said on Fox News.

"It would go to the Senate and impeachment proceedings and removal would take place."