Site: nolo.com
... If you stay beyond that date, you become "unlawfully present," and the consequences can be severe. ... After 180 days of unlawful presence, you cannot return to the U.S. for three years from the date you ... grace period that an immigration officer can give you if you are in either the E, H, L, O, or TN visa ... It means you can enter the U.S. up to ten days before your job is to start, and you can potentially remain ... It's up to you how you spend those ten days. ... After H-1B or Other Work Visa Ends: Will a Grace Period or Visitor Visa Let You Stay Longer? ...