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Unless your sentence has travel restrictions, or unless you're on probation when you're wanting to travel, you should be able to travel without any issue.
Usually, the only time restrictions are made against travel is when there is a felony conviction at issue.
The only entry requirements are listed here: http://travel.state.gov/travel/cis_pa_tw/cis/cis_1135.html#entry_requirements - which is what I'm sure you've already looked at.