America's "divorce" from the rest of the world is doing the country's economy a favor, economists Paul Hickey and Rob Martin told CNBC on Thursday.

"It's not that there aren't leakages, it's not that it doesn't matter what happens in the rest of the world," but after China's market turbulence and the European debt crisis, the U.S. focusing within engenders some major benefits, said Martin, senior U.S. economist at Barclays.