Marco Rubio received boos from the GOP debate audience Saturday for repeatedly pivoting his answers toward attacks on President Obama as his rivals pile criticism onto the freshman senator.  

After a lengthy attack by Chris Christie in which he accused Rubio of cutting and running from his support of the 2013 Senate immigration compromise bill and then John Kasich touting his resume, moderators asked Rubio to respond to the criticism of his immigration stances. 
But instead, Rubio reasserted a point he made much earlier in the debate where he accused President Obama of willingly cutting down the country, a decision that immediately drew boos from the audience. 
"I think anyone who believes that Barack Obama isn’t doing what he’s doing on purpose doesn’t understand what they are dealing with here," Rubio said as the crowd booed.
He went on to hit the president on. 
ABC News moderator David Muir then noted that no one had mentioned President Obama, to which Rubio noted that the preceding candidates had mentioned him. 
Christie has led the charge of GOP candidates piling onto Rubio in the hopes of blunting the momentum he received after a strong third-place finish in the Iowa caucuses. Rubio is currently in the mix of candidates — including Jeb Bush, Christie, and Kasich — who are all struggling to break out in the establishment lane in New Hampshire.