The New Jersey governor took shots at the president while defending his own record.
Christie also pushed back on perception of Clinton as inevitable Dem nominee.
"Marijuana is a gateway drug," the potential 2016 contender said.
Christie will unveil his proposals in a speech in New Hampshire.
Christie, a 2016 contender, has denied being personally involved in the lane closures.
He urged Congress to take "swift action" after a House bill was pulled in January.
The comments to GOP donors were apparently a veiled shot at Scott Walker.
The super-PAC allows a future campaign to solicit huge contributions from major donors.
Walker gets 18 percent compared to 16 percent for Bush.
Who shone and whose luster faded at the conservative conference?
Coverage on Fox News Channel is essential for any 2016 Republican candidate.
Debbie Wasserman Schultz gave talking points against Bush, Walker and others.
Will Jeb Bush and Marco Rubio benefit from a Hispanic political ascendency?
"Sometimes you just have to be willing to say what the truth is," he told voters.
Walker and Bush are the front-runners of a packed field in the early-voting state.
“If you've shaken his hand, you get it. That's what New Hampshire is all about."
At look at the sitting Republican governors who might run for president.
A majority of voters in the Sunshine State say neither should run for president.
If Marco Rubio runs for president, he'll be a stronger candidate than the media expect.
DES MOINES, Iowa -- “The president's energy policy is a bumper sticker,” Christie said.
Here are some Republican frontrunners — and some underdogs.
The New Jersey governor says he's not dead yet in 2016 waters.
The possible 2016 GOP candidate said he will appeal judge's decision.
Woody Johnson, a top GOP fundraiser, supported Mitt Romney in 2012.