** FILE ** Republican presidential candidate Rep. Ron Paul, R-Texas, center, is joined on stage with members of his family during his South Carolina presidential primary election night rally in Columbia, S.C., Saturday, Jan., 21, 2012. Former House Speaker Newt Gingrich won the Republican primary that night. (AP Photo/Pablo Martinez Monsivais)

Photo by: Pablo Martinez Monsivais

** FILE ** Republican presidential candidate Rep. Ron Paul, R-Texas, center, is joined on stage with members of his family during his South Carolina presidential primary election night rally in Columbia, S.C., Saturday, Jan., 21, 2012. Former House Speaker Newt Gingrich won the Republican primary that night. (AP Photo/Pablo Martinez Monsivais)