Answered on Jan 21st, 2011 at 2:43 PM
You can get married to a US citizen right after divorce. It will look suspicious to USCIS because it occurred soon after your divorce. However, it all depends on strong the new relationship is. For example, if you already know your new husband for 5 years and has been dating him on and off (having an affair) then it makes sense to marry right after divorce. If you hardly know your new husband then it would be weird to marry him right after the divorce.
Exercise common sense and good judgment.
The law does not require you to wait to get married to another citizen and apply for the green card.