Over at the Corner, Tim Pawlenty explains why he decided to endorse Mitt Romney and become national co-chair of his campaign.

He also talked about it on Fox and Friends this morning:

“It is an honor to have Governor Pawlenty’s support,” Romney said in a statement today. “Tim will be a trusted adviser as I move forward with my campaign. Tim has always been an advocate for lower taxes, reduced spending, and an environment where jobs can be created. It is an honor to have him serve as co-chair to my campaign for the presidency.”