<sod >" Work and Pensions Secretary Iain Duncan Smith suggested that MrsÂ MillerÂ was suffering a backlash for being the minister responsible for the same-sex marriage Bill, which was deeply unpopular with many grassroots Tories.< eod>< sod > Meanwhile, Work and Pensions Secretary Iain Duncan Smith suggested on BBC1âs Andrew Marr Show that Mrs Miller was the victim of a backlash for being the Minister responsible for the same-sex marriage Bill, which was deeply unpopular with many grassroots Tories.< eod>