Anyone have any idea of how the “USMCA” proposes to change IP protection? Or how / whether it differs from NAFTA in any way but the label?

The US gives 10 years of data exclusivity to biologic drugs. Canada and Mexico currently each give less than that, but under the USMCA CA & MX both agree to bring their data exclusivity terms up to the US term. I am not sure if that is the only IP related provision of the USMCA, but it is a provision of which I happen to be aware.

Has anyone seen any movement on the China front in terms of IP protection?

Depends on what you mean by “movement.” It has definitely been my experience that getting a CN patent or trademark now is much easier than it was ~10 years ago.

With regard to the trade secret appropriation (or misappropriation as some would call it), I have seen no movement. Nor—for all of the bluster, prevarication, and posturing from this administration—will there likely be any movement any time soon. The PRC quite rationally realizes that they can make great economic gains at this stage in their development process simply by copying what companies from other parts of the world do. So long as that remains the case, CN will continue to uses its considerable market power to obtain access to the information that they need to copy to keep this forward movement going.

Eventually, they will have appropriated all of the information that there is to appropriate, and CN companies will be sitting on the technological frontier. At that point, there will be no more copying to be done, and they will have to make their own innovation happen. In other words, at some point the trade secret appropriate issue will solve itself. In the meantime, however, there is very little leverage that any of us (CA, DE, US, etc) have to stop such trade secret appropriation. It is no surprise, then, that years of jawboning the PRC have achieved very little, and that Pres Trump has achieved no more than any of his predecessors (despite what his administration will claim on that score).