Ron Paul campaigns in Iowa (19 images)

A supporter of Republican 2012 presidential candidate and Texas Rep. Ron Paul sports a "Revolution" tattoo at a Salute to Veterans Rally in Des Moines, Iowa, December 28, 2011, in advance of Iowa's first-in-the-nation caucuses, January 3,2012. UPI/Mike Theiler

Military veterans and supporters observe a moment of silence during Republican 2012 presidential candidate and Texas Rep. Ron Paul's Salute to Veterans Rally in Des Moines, Iowa, December 28, 2011, in advance of Iowa's first-in-the-nation caucuses, January 3, 2012. UPI/Mike Theiler

Republican 2012 presidential candidate and Texas Rep. Ron Paul waves to supporters as he concludes his remarks at a Salute to Veterans Rally in Des Moines, Iowa, December 28, 2011, in advance of Iowa's first-in-the-nation caucuses, January 3, 2012. UPI/Mike Theiler

Republican 2012 presidential candidate and Texas Rep. Ron Paul poses for a photo with Jake Lammers of Dubuque, Iowa, who wears a shirt with one of Paul's campaign slogans "End the Fed", meaning the Federal Reserve Board at a Salute to Veterans Rally in Des Moines, Iowa, December 28, 2011, in advance of Iowa's first-in-the-nation caucuses, January 3, 2012. UPI/Mike Theiler