New Delhi - India must be cautious while negotiating the proposed bilateral trade agreement with the US, as the absence of Fast Track Trade Authority in America makes any pact vulnerable to Congressional changes, economic think tank GTRI said on Tuesday. It also said that the certification process allows the US to effectively re-negotiate the trade agreement after it is signed, demanding domestic legal changes, regulatory reforms, and policy shifts that could undermine India's sovereignty."As negotiations continue, the path forward demands not only . . .