Dubey told Newsweek that many wealthy Indian immigrants split their financial assets, with roughly 70 percent staying in the U.S. and 30 percent going back to India. Since the first proposal of a remittance tax, there has been a steady outflow of money from the U.S. as immigrants look to avoid taxation at a later time when they head home for good.

The $3.3 trillion legislation survived a brief GOP revolt over the weekend to allow the Senate to move forward with debate on the measure, but its final passage is far from certain.

Entering the final stretch of an arduous process, the Republican-controlled Senate began voting Monday on amendments to President Donald Trump's massive tax cut and spending bill, with the goal of passing it later in the day.