Well, one point is that if the US decides not to ratify it or takes too long, there is a competing agreement that China has proposed that would give greater tra

Well, one point is that if the US decides not to ratify it or takes too long, there is a competing agreement that China has proposed that would give greater trade freedom to China, and their proposal has far less in terms of ecological and human rights protections. Not to mention that it would mean that the US loses a bunch of leverage against China economically.