I lost my green card when I left the US a few month ago (I made the € after I left)
Could I get in trouble by not reporting?
Is there anyway IRS could find out?
whatever the statute says.
(b) Definition of resident alien and nonresident alien
(1) In general
For purposes of this title (other than subtitle B)—
(A) Resident alien
An alien individual shall be treated as a resident of the United States with respect to any calendar year if (and only if) such individual meets the requirements of clause (i), (ii), or (iii):
(i) Lawfully admitted for permanent residence Such individual is a lawful permanent resident of the United States at any time during such calendar year.