Donald Trump Vetting Gen. Michael Flynn for Potential VP Pick

The retired general is registered as a Democrat.

— -- Retired Gen. Michael Flynn is being vetted as a potential running mate for presumptive Republican nominee Donald Trump, two senior level sources with direct knowledge tell ABC News.

Flynn, 56, is a registered Democrat in North Carolina and served under the Obama administration for a time, but the tenure wasn't without controversy. He clashed with Director of National Intelligence James Clapper, and the Washington Post reported in 2014 that he was leaving his post a year earlier than originally intended.

Flynn, who is now chairman and CEO of Flynn Intel group in Alexandria, Virginia, has advised Republican candidates for president this cycle, and has previously said that presumptive Democratic nominee Hillary Clinton drop out of the race because of the email controversy.

When he was asked by the New York Post last week about potentially being vetted, indicated that he would consider it.

"All I would say is that I have been honored to serve my country for the past three decades and look forward to serving in other ways now that I am retired from the U.S. Army," Flynn said. "I've been a soldier too long to refuse to entertain any request from a potential commander in chief."