ICYMI: Jeb Bush Endorses Mitt Romney

In a statement following Mitt Romney's win in Illinois, Jeb Bush calls for GOP unity behind the front-runner:
"Congratulations to Governor Mitt Romney on his win [on Tuesday] and to all the candidates for a hard fought, thoughtful debate and primary season,” said Bush in a statement. “Primary elections have been held in thirty-four states, and now is the time for Republicans to unite behind Governor Romney and take our message of fiscal conservatism and job creation to all voters this fall. I am endorsing Mitt Romney for our Party’s nomination. We face huge challenges, and we need a leader who understands the economy, recognizes more government regulation is not the answer, believes in entrepreneurial capitalism and works to ensure that all Americans have the opportunity to succeed."
The establishment of the Republican party is starting to fall in line. When will others in the GOP?