How long does a person have to remain in US before returning overseas after being overseas for a year?

I stayed overseas for a year,i need to know how long i have to
stay in the US before i can apply for another visa

Answer:
maybe 5 yrs.
You don't, you can apply immediately for a new visa, whether its approved or not would ultimately be determined by the host country.
You can try these links for your answer.

http://travel.state.gov/passport/passpor...

http://usinfo.state.gov/usa/infousa/...

Or this engine search

http://search.msn.com/results.aspx?q=ame...

The immigration information post by website user , MyTend.com not guarantee correctness

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