Nishikant Dubey, MP from Godda in Jharkhand, made the remark while participating in the debate on Finance Bill.
Dubey, who was the first member from the Treasury benches to speak on the issue, said "we will not be able to bring back black money from Switzerland in our lifetime. We cannot bring it back because people have formed trusts. Citizens of Switzerland are employees who hold the trust.
"When you ask for money and names, you will seek names of Indians. There is no question of asking the name of the trustees. And if we don't then how will we get back black money from Switzerland," he said.
In the run-up to the Lok Sabha elections, Narendra Modi had repeatedly said if the BJP comes to power, the party will bring back black money stashed abroad.