MIT economist Jonathan Gruber waits to testify on Capitol Hill in Washington, Tuesday, Dec. 9, 2014, before the House Oversight Committee health care hearing.
MIT economist Jonathan Gruber waits to testify on Capitol Hill in Washington, Tuesday, Dec. 9, 2014, before the House Oversight Committee health care hearing. Molly Riley AP
MIT economist Jonathan Gruber waits to testify on Capitol Hill in Washington, Tuesday, Dec. 9, 2014, before the House Oversight Committee health care hearing. Molly Riley AP