Getting a proper Visa is a mandatory thing here to work in the US.
Whether it is a L1 Visa or Green Card, it is always better to ask for a professional help.
Below are some of the immigration lawyers. But please be aware that no legal lawyer nor RakuNest member can assure you getting Visa for an individual since this will be decision of the US government.
Please do not underestimate the importance of proper Visa. Any breach of such rules might end up being one kicked out from US.
In English
Dentons (Palo Alto)
In Japanese
Marshall Suzuki (San Francisco)
Tomita Law (Torrance)
Noguchi Law (Los Angles)
Taki Law Office (Torrance)