The Patient Protection and Affordable Care Act (ACA) was signed into law on March 23, 2010, but many of its most significant provisions became effective on January 1, 2014. The ACA imposes new requirements and related penalties for both individuals and employers regarding health insurance coverage. But how does the ACA affect globally mobile employees, e.g., those on a long-term assignment to the U.S. or abroad, or who frequently cross borders on business travel?