Terri Giles, Burwell's lifelong friend, said Sunday night that Burwell and her mother were in Washington, D.C. Burwell's father, William, is in the hospital and not able to make the trip, she said.
"I think she's a perfect choice, and we certainly need someone who has the kind of experience she does, knowing how to balance a budget and get things cleaned up," Giles said.
Also Monday, Obama named two new nominees who will focus on another second-term priority -- tackling the threat of climate change. The president promoted current EPA official Gina McCarthy to lead the agency and MIT scientist Ernest Moniz to run the Energy Department.
"They're going to be making sure we're investing in American energy, that we're doing everything we can to combat the threat of climate change, that we're going to be creating jobs and economic opportunity,'' Obama said of McCarthy and Moniz. "They are going to be a great team.''
Moniz, 68, oversees MIT's Energy Initiative, a research group that focuses on innovative ways to produce power while curbing greenhouse gas emissions. But unlike outgoing Energy Secretary Steven Chu, he is also well-versed in the ways of Washington, having served as the Energy Department's undersecretary in the Clinton administration.
Moniz has also advised Obama on central components of the administration's energy plan, including a retooling of the country's stalled nuclear waste program, energy research and development, and unconventional gas.
In a 2009 alumni interview published on Boston College's website, Moniz noted that he learned to balance both political and scientific demands while working in the Clinton administration. "Physics sometimes looked easy compared to doing the people's business,'' he said.
In nominating McCarthy to be the nation's top environmental steward, Obama is promoting a climate change champion and a 25-year veteran of environmental policy and politics. McCarthy has served under both Republicans and Democrats, and is known for a matter-of-fact approach appreciated by both businesses and environmental advocacy groups.
Among her past bosses: former Massachusetts governor and Obama's Republican presidential opponent Mitt Romney, for whom she was a special adviser on climate and environmental issues.
Since coming to Washington in 2009, McCarthy has been the most prominent defender of EPA policies. As the head of the air pollution division, she has been behind many of the agency's most controversial new rules -- from placing the first limits on greenhouse gases on newly built power plants to the first-ever standard for toxic mercury pollution from burning coal for electricity.
All three nominees announced Monday must be confirmed by the Senate.