No felonies or sexual assaults on your record and also you are drug tested when you get here. Basically they look at the whole Criminal Background Check. Good Luck.
I´ve been in Korea teaching for 3 years. The other replies to your thread aren´t true at all. You can have nothing on your criminal record, however minor it is. Immigration will not give you a work Visa (E2).
I suggest that you do your FBI check. Upon receipt of the results, get the FBI record check document notarized by a notary in your state or juristriction. Prepare a letter telling the next official party where the document will be ultimately used. Determine the applicable fee as it varies from state to state. Submit it to your State Department of State. Upon receipt of the aforementioned state certificate of authenticity, you have to send it to the United States, Department of State in Washington, D.C. to get the 2nd U.S. certificate of Authencity. This cost about $8.00 USD. The last step is to send it to the Embassy of the country you are going to live and work in. Find out the embassy fee. To save time, try to get 4 copies. Take one with you after you get the first certificate. Let the other three go through the process. You can use a service to expedite this who process. It will cost. By having one copy, it will save you stress should any of the other three get lost. I have obtained both federal and state police record checks. I have a total of eight. Find someone who has connections with the embassy and country where you are headed. Do your research and becareful of identity theft.