The intensified focus on these markets is part of Commerce Department's top three priorities to help American businesses 'build it here and sell it everywhere,' focusing on supporting advanced manufacturing, increasing US exports, and attracting more investment to America from all over the world.

"At the Commerce Department, we aren't waiting to act. We have a major role to play at this critical time to support job creation in America," US Commerce Secretary John Bryson said in a speech at the US Chamber of Commerce Thursday.

"And in the months ahead, we will restructure our foreign commercial service to intensify their focus on strong export growth markets including China, Brazil and India," he said.

Launched in 2010, the National Export Initiative has already helped US businesses expand exports 17 percent in 2010 and 16 percent so far this year, he said. That puts the initiative on track to meet President Barack Obama's goal of doubling US exports by the end of 2014.

"In places like China, Brazil and India, businesses are investing in new industries and new growth opportunities and looking to grab market share wherever they can. They're part of the same, troubled global economy we are. But they're not backing down."

For attracting more investment to America from all over the world, the recently launched SelectUSA makes a coordinated federal effort to aggressively pursue and win new business investment in the United States, from both domestic as well as foreign companies, Bryson said.