Wealthy French will abandon their country and move their wealth to another port.
Belgium is a close alternative, but the Dutch (just North) are losing to the Muslim invasion and France, when it falls to the Muslims will not take kindly to a wealthy Belgium. German is an alternative, but the French may remember WWII and what Germans did to them.
If the USA was smart (after excising the obama Regime) we would provide a favorable tax (which Romney/Ryan will implement) and make America more attractive and stable, which will attract the French.
America can save the French again, but this time the French will pay for their own safety, if America is smart . . . . after the obama Regime is history.