Carrie Dann reports:The Senate Tea Party Caucus today was newsworthy for who wasn't there as much as who was. As
Not every Republican who received Tea Party backing during the election opted to attend the first meeting. Sen. Marco Rubio, who received support from DeMint during the 2010 campaign, is holding out from formally joining the caucus. And new GOP freshmen Sens. Ron Johnson of Wisconsin and Kelly Ayotte of New Hampshire have also said they're not considering themselves part of the group at this time.