Smith was one of the few to raise the independence issue at this time, according to his memoirs because his "instinct and training told me to be prepared for every contingency". During the Federation debate in the House of Assembly, he posited that since Southern Rhodesia was effectively choosing Federation over independence, a clause should be inserted into the bill guaranteeing Southern Rhodesia dominion status in the event of a Federal break-up. The United Party rejected this on the grounds that the Federation had to be declared indissoluble so it could raise loans. Smith was uncertain about the Federal project, but publicly supported it after the mostly white electorate approved it in a referendum in April 1953. He told the "Rhodesia Herald" that now it had been decided to pursue Federation, it was in Southern Rhodesia's best interests for everybody to try to make it succeed. He and other Rhodesia Party politicians joined the new Federal Party, headed by Huggins and Northern Rhodesia's Sir Roy Welensky, on 29 April 1953.