People are worried that we'd find out in a few years for Snowden Jr. that the (three-letter-acronym) had been making up fake passports for the purpose of running Tor nodes
But they can run fake Tor nodes today, without doing any work at all. And as I pointed out, nothing stops you from picking nodes run out of different countries. The NSA might be able to fake US passports just fine. If they can get the Russian and Chinese private keys, well .... at least all the incentives are right to make that hard.
It really can't make anything worse. You can easily run multiple nodes off one passport. Just don't expect the same wallet app to connect to more than one of them. Tor has the notion of families, it maps naturally to that.