Offences never become 'spent' under US law, so the 10-year period is irrelevant.
Here's the relevant section from the U.S. Department of State Foreign Affairs Manual, with regard to the definition of 'moral turpitude'. As I read it, 'ABH' does not constitute 'moral turpitude' unless it was done 'with intent to kill', 'with intent to commit rape', 'with intent to commit robbery', 'with intent to commit serious bodily harm' or 'with a dangerous or deadly weapon':
http://www.state.gov/...rganization/86942.pdf
Chris