Vice President Mike Pence and Kansas Secretary of State Kris Kobach will lead the commission, which will look at allegations of improper voting and fraudulent voter registration in states and across the nation, one official said. The officials spoke on condition of anonymity because they weren't authorised to discuss details ahead of the formal announcement.
Trump has alleged, without evidence, that 3 to 5 million people voted illegally in his 2016 campaign against Democrat Hillary Clinton. He has vowed since the start of his administration to investigate voter fraud, a process that has been delayed for months.
The panel will aim to ensure confidence in the integrity of federal elections while looking at vulnerabilities in the system and the possibility of improper voting and fraudulent voter registration and voting, the official said.
Potential panel members include former Ohio Secretary of State Ken Blackwell and Indiana Secretary of State Connie Lawson, the official said.
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Other names under consideration include longtime New Hampshire Secretary of State Bill Gardner and Maine Secretary of State Matthew Dunlap, both Democrats, and Christy McCormick of the US Election Assistance Commission.
Trump won the presidency with an Electoral College victory despite losing to Democrat Hillary Clinton by nearly 3 million votes.
Voting experts and many lawmakers have said they haven't seen anything to suggest that millions of people voted illegally, including House Oversight Committee Chairman Jason Chaffetz. The Utah Republican said his committee won't be investigating voter fraud.
In a lunch meeting with senators in February, Trump said that he and former Republican Sen. Kelly Ayotte would have won in New Hampshire if not for voters bused in from out of state. New Hampshire officials have said there was no evidence of major voter fraud in the state.
The secretary of state championed Kansas' proof-of- citizenship requirement as an anti-fraud measure that keeps noncitizens from voting, including immigrants living in the US illegally. Critics contend it suppresses voter turnout, particularly among young and minority voters, and that there have been few cases of fraud.