(B) Draft evaders.

Any person who has departed from or who has remained outside the United States to avoid or evade training or service in the armed forces in time of war or a period declared by the President to be a national emergency is inadmissible, except that this subparagraph shall not apply to an alien who at the time of such departure was a nonimmigrant and who is seeking to reenter the United States as a nonimmigrant.