[cripplecreek]

Perry supported it till it became politically expedient to oppose it.

(in May)Rick Perry Comes Out in Favor of Obama Trade Deal

(June) Amid Secrecy, Rick Perry Retracts Obamatrade Support: ‘I Would Rather Barack Obama Not Be Negotiating for Me’

I will say on Scott Walker's behalf that he isn't hiding from it, its just that no one is talking about it.

Scott Walker Pushes Obamatrade On Eve Of Vote

[conservativejoy]

Those opposing TPA have to hope that the public doesn’t finally educate themselves on the benefits of having the TPA in place.