

Either he was arrested with no record of the arrest (i.e “disappeared”) which is a new line for the administration to cross, or he disappeared for another reason (by himself, or with help or coercion by a foreign entity like the CCP), and the FBI is investigating.
I hope journalists keep on this because the first option would be a huge problem that everyone needs to know about, but without more information, the second is also a possibility. The CCP is known to have agents in western countries that manipulate and pressure ex-pats to return to China. Keeping an open mind now will also strengthen the argument if evidence for the former comes to light.
Looks like a LOWESS curve (https://en.wikipedia.org/wiki/Local_regression). They always overfit, but are still useful to show trends. The main danger is that they get wonky near the limits of the data. Note that that increase at the end of the left plot for Democrats looks like it is increasing -but that increase looks to be 100% dependent on that single data point for '25. Obviously, you never want your analysis to be dependent on a single point like that.