I wouldn't say they can't but it would be really hard for many .....there is no doubt both the parties gain from each other,the only thing that matters is who gains more...Lets make it easier to think ,would Indian entrepreneurs be able to carry out their business smoothly without nepali workers? why not??No doubt at all.But its not true other way around.For them absence and presence of nepali workers just determines the margin of profit they will be making out of the business(as everbody says they pay less to Nepali),its not sth that the business halts. They can hire any body to work on their stores but a student from Nepal on F-1 visa wont be hired by anyone unless sb shows some grace to pay him in cash or the person himself be ready to accept paycheck forgetting the underlying risk.Can't we call it a favour on our side??So,stop grunting on this issue,focus on ur aim and keep going.....U will reach ur destination after couple of summers!!