Hi, If anyone is a visa expert (or knows one):

I currently live and work in Moscow. I'm trying to live here half time here and half in US.

I currently receive a work visa/work permit once a year.
Can I receive the work visa/permit if I'm here part time? What is the minimum time to live here and still get the annual permit/visa?
Or, are there other visa options for working here part time?

Thanks for any help, Rob