Yes he can return to US with no problem. As to visa, it depends on the country. In you case of Russia, I would keep away from it even as USC. This is not because of the US laws but Russian.
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I agree with attorney Segal.. if he was truly afraid to go back to Russia then I don't know what has changed that would make him now feel ssfe as the country is now even more repressive.
(888) 275-0047 Legal disclaimer: Daniel Shanfield, Esq., with offices in San Francisco and San Jose, is a former INS trial attorney and United Nations HCR resettlement officer, with over 15 years experience in immigration law. His statements above are general in nature and should not be deemed legal counsel, as not all factual issues are known. Participants should retain an immigration lawyer to review their own legal matter. The information provided does not create an attorney/client relationship.
Going back to the country one claimed to fear, is always a very bad idea.
J Charles Ferrari Eng & Nishimura 213.622.2255 The statement above is general in nature and does not constitute legal advice, as not all the facts are known. You should retain an attorney to review all the facts specific to your case in order to receive advise specific to your case. The statement above does not create an attorney/client relationship. Answers on Avvo can only be general ones, as specific answers would require knowledge of all the facts. As such, they may or may not apply to the question.