"As a member of the House of Representatives for the last few years, I have fought tooth-and-nail against President Obama's agenda at every turn. I was the first member of Congress to call him a socialist who embraces Marxist-Leninist policies like government control of healthcare and redistribution of wealth," he writes in a letter to potential fundraisers obtained by The Atlanta Journal-Constitution.

Broun is the only candidate who's so far announced for the seat left open by Sen. Saxby ChamblissSaxby ChamblissGOP hopefuls crowd Georgia special race Democrats go for broke in race for Tom Price's seat Spicer: Trump will 'help the team' if needed in Georgia special election MORE's (R-Ga.) decision to retire, though a number of other Georgia Republicans, including Reps. Tom Price, Jack Kingston, Phil GingreyPhil GingreyBeating the drum on healthcare Former GOP chairman joins K Street Former Rep. Gingrey lands on K Street MORE and Tom GravesTom GravesRep: Hacking back bill not 'the Wild West' Overnight Cybersecurity: Senate Intel chiefs get subpoena power in Russia probe | Trump orders probe of leaks | Lawmaker unveils 'hacking back' bill Rep releases draft 'hacking back' legislation MORE, are also considering a bid.

The hardline conservative congressman has a history of making incendiary comments — just a few weeks ago he said Obama followed the "Soviet Constitution" — but since he announced his bid he has used some notable restraint in his rhetoric. It seems that only goes so far.