I do not think so. In a way what the Left parties are doing is to get teh best out of the Pact we are going to sign. There will be clarification from US on several things those that are raised.
After all, US is eually interested to get the 123 Deal through. And they might give those concessions that were demanded by our negotiators and have not got. Certainly there are gray areas around. And those need not be white washed.