U.S. citizens and permanent residents must report all worldwide income on their U.S. tax returns.

FORBES: As Foreign Banks Brace For FATCA, You Should Too

U.S. citizens and permanent residents are required to report their worldwide income on their tax returns.

FORBES: High Cost To Go Green: Giving Up A Green Card

Can U.S. citizens and permanent residents give up their citizenship or Green Card?

FORBES: High Cost To Go Green: Giving Up A Green Card

Still, some U.S. citizens and permanent residents (with green cards) are willing to give it up, hoping to give up paying IRS taxes too.

FORBES: If IRS Is Like Kryptonite, What Would Superman Do?

U.S. citizens and permanent residents must report their worldwide income to the IRS. That includes interest on foreign accounts even if taxed in another country.

FORBES: Beware Bank Interest Reporting Even For Nonresidents

U.S. citizens and permanent residents must report worldwide income.

FORBES: U.S. Is Doing FATCA Deals With 50 Countries!

For these and other reasons, some American citizens and U.S. permanent residents are calling it quits.

FORBES: Tax Expatriates: We'll Always Have Paris

"The revised Additional Buyer Stamp Duty measures are meant to moderate the demand for properties across all groups of buyers of properties, including Singapore citizens, Singapore permanent residents and foreigners, " a statement provided by a Ministry of Finance official said.

WSJ: Singapore Fee Stings Wealthy House Buyers��Except Americans

After eight years, individuals would be allowed to become legal permanent residents and could eventually become citizens five years later.

BBC: President Obama makes immigration reform push