While presidential rumors surround him, Gov. Chris Christie has started brushing up more on foreign affairs.

Governor Christie visits the boardwalk to kick off Labor Day Weekend in Point Pleasant, N.J. (Governor's Office/Tim Larsen)

In fact, former Secretary of State Condoleezza Rice is serving as unofficial adviser to the governor.

Christie's lack of foreign affairs experience and savvy has come under fire, something that critics point to as a reason he is not qualified to run the country.

The New York Times reports that Christie recently fumbled a question about Russian during a meeting with top GOP donors.

Because of the growing scrutiny on the issue, Christie's trade mission trip this week to Mexico comes with greater urgency to demonstrate a level of foreign policy acumen, which has eluded him so far.