My brother was a legal resident in canada and came to U.S on Student visa (F1). During the course of his studies he was caught working off campus by CBP officer, who canceled his visa and deported him to Canada and was barred from entering U.S for 5 years.
Now my brother is a citizen of canada. My question is what are possibilities that he'd get entry in U.S even after completing his bar of 5 years. Will he need to file for a weiver for inelegibility (I-192), even though he is a Canadian citizen and doesn't need a visa to cross into U.S. He has one brother and one sister legal residents of U.S.
Thanks in advance for any suggestions.