Would you renounce your U.S. citizenship if it meant you'd be sending less of your hard-earned dollars to Uncle Sam?

As Americans face higher taxes and stricter enforcement, a growing number of them are, indeed, deciding to turn in their US passports. As of 2013, 77% of Americans will pay higher federal tax rates because the cuts in Social Security payroll taxes expired when Congress passed its tax package on New Year's Day.

But the wealthiest households face the highest tax increases. From 2009 to 2011, the number of expatriates, or those who renounced their U.S. citizenship, doubled to 1,781.

Nigel Green, CEO of deVere Group, which provides financial services for expatriates, said that since the start of this year, 48% more of his clients in January than in a typical month inquired about moving funds abroad and the possible tax implications of changing citizenship.