Criminal background check.
If you have couple of minor violations such as speeding ticket etc, it may not affect you to get working visa, but if you have too many minor violations, your visa application is not alwyas guaranteed to be accepted.
The criminal background check is only valid within 180 days/ 6 months of the E2 visa application.
America:
Wisconsin State.
State of Wisconsin Department of Justices.
PO Box 2688
Madison,WI 53701-2688
Tel: 608 266 5764
Oregon State
Department of State Police
Identification Services Section
3772Poftland Road NE
Salem, OR 97301
(503) 378-3070 (Voice/TTY)
FAX (so3) 378-2121,
Texas State
The central DPS office in Austin, on West Lamar Blvd