Amess normally adheres to Conservative party policy when voting in the Commons, but he is very strongly in favour of the ban on fox-hunting. He voted for the 2003 invasion of Iraq but has since been critical of the Labour government's failure to find the weapons of mass destruction with which they justified the action at the time. On foreign policy, he is also a leading member of Conservative Friends of Israel. He was one of the few Conservative MPs to support the impeach Blair campaign.