Former President Barack Obama Barack Hussein ObamaObama warns of a 'decade of unfair, partisan gerrymandering' in call to look at down-ballot races Quinnipiac polls show Trump leading Biden in Texas, deadlocked race in Ohio Poll: Trump opens up 6-point lead over Biden in Iowa MORE's Homeland Security chief will testify before the House Intelligence Committee next Wednesday as part of its probe into Russia's efforts to interfere in the 2016 presidential election, a congressional source confirmed to The Hill.

The panel's top lawmakers said earlier this month that they planned on asking former Homeland Security Secretary Jeh Johnson to testify publicly before the committee.

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Johnson spoke to lawmakers on the Senate Intelligence Committee earlier this week, though that session was private.

Johnson is likely to face questions about Russian efforts to breach U.S. election systems. He said in an interview on MSNBC earlier this month that he was not aware of any attempts to change vote counts, though he acknowledged that Russian hackers attempted to interfere with voter registration bases.

The House Intelligence Committee is one of at least four congressional panels looking into Russia's role in the 2016 election, as well as possible collusion between President Trump's campaign and Moscow. Former FBI Director James Comey confirmed in March that the agency was conducting its own probe into the matter.