To insure the survival and profitability of HI, I propose that the Nepal operation be terminated and the Kami's and their families set up shop in Nevada. They could live and work in some remote location and claim to be a religious cult. It would be a while before the government attacked and came to burn them out, during which time the Kami's would train undocumented workers from Mexico to actually do the work.
As more workers from Mexico settled in, the cult status could be modified to "non-profit community based business" which would be the recipient of grants and loans from the government instead of attacks by tanks and fire bombs. Bill and Yangdu would set up an intensive English learning program, so the Kamis could leave to take good paying jobs in Nevada's "entertainment" industry.
For their services, the Martinos would be entitled to a generous retirement package which would not only pay all required bribes for them to live in Nepal in "Tourist Style" but would also put them in a position to receive bribes, thus insuring a comfortable future - at least until The Revolution.