The USCIS does not track marriage and divorce records, so even if the man had divorced within the U.S. he could potentially be asked to provide documentation of the divorce. An overseas divorce will normally be treated as valid by the U.S., although if a copy of a divorce judgment is requested it may be necessary to provide a properly certified translation along with a certified copy of the original judgment.
If the man comes from a nation that follows divorce procedures that are unorthodox by U.S. standards, he should discuss the details with an immigration lawyer.

