(a) An alien who has been convicted of a felony or of three or more misdemeanors in the United States; or

(b) An alien who has ordered, incited, assisted, or otherwise participated in the persecution of an individual because of the individual's race, religion, nationality, membership in a particular social group, or political opinion; or

(c) An alien who has been convicted by a final judgment of a particularly serious crime and who is a danger to the community of the United States; or

(d) An alien who the Attorney General has serious reasons to believe has committed a serious nonpolitical crime outside the United States before the alien arrived in the United States; or

(e) An alien who the Attorney General has reasonable grounds to believe is a danger to the security of the United States.