First clashes in Iowa set tone over immigration

By Tim Gaynor

PHOENIX (Reuters) - Arizona Republican Sen. John McCain lost ground to his presidential rivals over support for what his opponents called "amnesty" for illegal immigrants.

Democratic front-runner Sen. Hillary Clinton of New York stumbled in a recent debate when asked to define her position on illegal immigrants and drivers licenses.

Former Arkansas Gov. Mike Huckabee, who leads the Republican field in Iowa, had to backtrack on comments he once made that supported providing education for the children of illegal immigrants.

As campaigning builds for the Democratic and Republican nominations for the U.S. presidential election in November, taking a tough stance on illegal immigration has become vital to their chances of being selected to represent their parties.

"It is like taking an oath in blood," said Demetrios Papademetriou, president of the nonpartisan National Migration Institute think tank, of the scrabble by candidates to prove their bona fides on the issue before the January 3 Iowa caucuses.

"(This time around) everyone wants to know that candidates will have a position on illegal immigration," he added.

The question of what to do with 12 million illegal immigrants has been a hot-button topic for months in the United States, where a bill seeking tougher enforcement and a path to legal status for many was killed by the U.S. Senate in June.

In Iowa it has joined concerns over the wobbly economy and handling of the war in Iraq as a defining issue at the start of the grueling state-by-state contests.