Gov. Chris Christie cited New Jersey's lack of money Wednesday in standing by his decision to kill a train tunnel connecting his state to New York City, a move that could force the state to repay $350 million it was given to start the nation's biggest public works project.

Christie, a rising star in the Republican Party for his fearless budget-slashing, has argued that his cash-strapped state can't afford to pay for any overruns on the $9 billion-plus rail tunnel under the Hudson River. The state is on the hook for $2.7 billion plus overruns.