Karen Mills, the administrator of the Small Business Administration, announced her resignation on Monday.
Mills became increasingly visible as a messenger of the Obama administration, which has been eager to present itself as relentlessly pursuing an entrepreneurial agenda. She helped lead the administration’s Startup America program, which seeks to encourage entrepreneurship in partnership with private institutions. In January 2012, President Barack Obama elevated the position of the agency’s administrator to his Cabinet.
Mills, who was a venture capitalist before she joined the agency in 2009, did not say what she planned to do next.