Denmark provides Greenlanders with:
Free universal healthcare services.
Free college education.
Legally entitled to 5 weeks of paid vacation per year.
Legally entitled to 30 paid sick days per year.
52 weeks of paid parental leave, which can be shared between both parents .
A more comprehensive and generous social security system providing higher benefits and greater financial security.
That's a lot more than the U.S. provides to it's citizens.