Environmentalists oppose it. So do labor unions, medical professionals, and major religious groups, as well as every leading presidential candidate. So why hasn’t the Democratic Party gone on record opposing the Trans Pacific Partnership (TPP)?That’s what Bernie Sanders wants to know.Noting that the deal “is opposed by virtually the entire grassroots base of the Democratic Party,” Sanders said Sunday he will reintroduce an amendment rejecting the TPP at next weekend’s full Democratic Platform Committee meeting in Orlando, Florida.