Still, Labour's belated stand is to be welcomed.
The party's leader Andrew Little set some benchmarks:
-Our drug-buying agency Pharmac must be protected;
-Multinational companies cannot sue the NZ Government for passing legislation in the public interest - think, for example, of legislation restricting tobacco sales or, should we ever get that far, laws limiting obesity-inducing food and drink;
-The right to restrict the sale of farms and houses to non-resident foreigners should be upheld;
-The Treaty of Waitangi must be upheld.
Whether this red line in the sand will make any difference is open to debate, but at least it is generally pointing in the right direction.
Ceding power to profit-driven corporations is a dodgy business as the debacle over Serco's running of Mt Eden prison has shown, and one suspects that is one likely outcome of the TPPA.
The deal has, alarmingly, been dubbed a threat to democracy. In one sense that has already come true. The National Government's refusal to engage with the people over the TPPA is the antithesis of democracy.