COLLEGE STATION, Texas – His campaign at a crossroads, Republican Mitt Romney said Thursday his Mormon faith should neither help nor hinder his quest for the White House and vowed to serve the interests of the nation, not the church, if elected president.

“When I place my hand on the Bible and take the oath of office, that oath becomes my highest promise to God,” Romney said in a speech that explicitly recalled remarks John F. Kennedy made in 1960 in an effort to quell anti-Catholic bias.

After declining for months to address the issue of his Mormonism directly, Romney switched course as polls showed widespread unease about his religion – and showed him losing his once-sizable lead in the opening Iowa caucuses to Mike Huckabee, a Baptist minister and former governor of Arkansas.

Associated Press Writer Alan Fram in Washington contributed to this report