Xi Jinping’s massive party purge of corrupt and/or inconvenient Chinese officials has been barreling along for more than a year now, and we have already seen it affect China in some unexpected ways—from hammering the bottom line of the gambling mecca of Macau to shaking the upper echelons of the People’s Liberation Army. And now it’s coming to America.The purge has been targeting both “tigers”—senior leaders guilty of massive corruption—and “flies”—the little guys taking part in the systemically corrupt bureaucracy. Now, we can add to that list “foxes”, officials who take the fruits of their corruption abroad to avoid the consequences. Wang Qishan, who masterminded the purge, is planning a trip to the U.S. to work out an extradition plan to round up these foxes and bring them home to face the music, according to the FT.America does not have an extradition treaty with China, so we will have to see to what degree, if any, Washington plays along with Beijing. Xi’s purge is in part a real anti-corruption campaign that sets its sights on criminals, so some form of cooperation is certainly possible. Indeed, the WSJ notes that the first signs of what such cooperation might look like are taking shape, with the Department of Justice indicting a former Chinese official and his wife accused of massive graft in China for immigration fraud in the U.S.There is, of course, a needle that needs to be carefully threaded here. The anti-corruption campaign is also very much an old-fashioned party purge, as was widely practiced in Stalin’s Soviet Union, and having the United States get too involved in this kind of murky business holds many perils, both moral and political. Generally speaking, making the extradition process much easier doesn’t seem like a good policy move. For one thing, the U.S. doesn’t want to appear to take the legitimacy of the Chinese criminal justice process at face value. And in general, it’s not a good idea to be scaring off defectors who may have valuable information about a serious geopolitical opponent.Wang’s trip to Washington is supposed to be a warm-up for Xi’s upcoming state visit in September. The tone set at these early meetings may tell us a lot about how the second, more formal visit will go—and how the U.S. will respond when Beijing sounds the foxhunt’s horn.