As he often does, Sen. Marco Rubo focused on the idea of America as an exceptional nation – a concept on which the Miami-born son of Cuban immigrants has focused in stump speeches long before this convention.

But unlike many convention speakers, he praised Romney at length in his convention address, casting the Republican presidential nominee’s family story as in league with his own.

"My dad was a bartender," he said. "My mom was a cashier, a maid, and a stock clerk at K-Mart. They never made it big. They were never rich. And yet they were successful. Because just a few decades removed from hopelessness, they made possible for us all the things that had been impossible for them."

But, Rubio continued, "That's not just my story. That's our story. ... It’s the story of a man who was born into an uncertain future in a foreign country,” Rubio said. “His family came to America to escape revolution. They struggled through poverty and the Great Depression. And yet he rose to be an admired businessman, and public servant.”

Romney’s father, George Romney, was born in Mexico to parents who had been ordered by the Mormon church to flee the United States, where anti-polygamy laws were tightening at the time. George Romney was later brought back to the United States at age 5 as his family was forced to flee Mexican revolutionaries.

“And in November, his son, Mitt Romney, will be elected President of the United States,” Rubio added to boisterous cheers from the crowd.