- B-1: for conferences, meetings, business events
- H-1B: for temporary employment in the US
- L-1: for intra-company transfer to a US-based branch.
- H-3: for training at a US company that is not available in the applicant's home country*
- J-1: “exchange” visitors in pre-approved areas of study.*
For all types of visas, applicants that don't have strong ties to their home country (such as a spouse, children, and property) may be denied. There is a Visa waiver program for visits of 90 days or less from 27 countries (mostly European, also Japan, Singapore, NZ).
Allow lots of time for visa applications to be approved, too. Plan on several months for applicants from places like India and China.
Are you thinking about pushing your luck on a B-1 Visa? Tread carefully. Attempting to obtain a visa by the willful misrepresentation of a material fact, or fraud, may result in the permanent refusal of a visa or denial of entry into the United States.
On the bright side, it's very easy for US citizens to obtain visas to almost any country - unless your offshore team is in Cuba, that is.