Kerry was asked how he would answer Bush's claim that the senator has flip-flopped on many issues.

CNN: Dems take Bush to task over proposed amendment

Speaking in the House of Commons, Bristol East MP Kerry McCarthy asked if the barrage scheme was back on the political agenda.

BBC: Severn Barrage: Ed Davey says ?30bn plan could progress

Kerry was asked to explain why, given his opposition to same-sex marriage, he voted against the 1996 Defense of Marriage Act, which withheld federal recognition of gay and lesbian marriages.

CNN: Dems spar -- gently -- over electability, gay marriage, Iraq