Why not?
If somebody didn't contribute to your country, how can he/she has right to criticize people who do?
If you mean right in a moral sense, I guess my question still is: Why not?
If you are negatively affected by the actions of a leader of a foreign country ... why should you not have a right to criticize that?
If you have some constructive criticism as to how the leader of a foreign country is doing their job badly and how they could to it better ... what would be the use of not saying so out loud? Couldn't that possibly even be a contribution to their country?
I really don't see why having contributed to something would have anything to do with whether you should criticize it or not?! I can see how maybe you don't get a direct say in who gets to be the leader, but that's quite different from criticizing them, isn't it? I haven't contributed to Equifax either, but I still don't see why I shouldn't criticize their leadership?! Or should I? Why? Why not? And how is a country fundamentally different from a company in that regard?
For me, I just don't comment something I don't understand, I'm not living in the US, so I can't feel what Obama's doing.
Because of that, how can I make a comment that is appropriate? I can't even make a comment that's accurate (Judging by those late night shows I watched on Youtube).
Now about tax, I think it's actually you paid your government to do what they want. When they did something wrong / you don't like it, of course you can complain about it.
But as a foreigner however, if the US government did some negative thing on us, the most effective way I think is to blame our government for letting it to happen.
BTW: Of course, in China we have anit-US (Or Japan etc) prides from time to time, just I'm not a fan of it.
This is what all the dictators say.
Far as I can remember, at that time (Around 2009, 20 years after Tiananmen event), there are some people says Liu Xiaobo should be awarded with the peace prize for against CCP's dictatorship.
Some people event had a debate about it. Some say Liu is a hero for democratize China, others say he's wants China to be invaded and controlled by ... may be the US?
That debate later end with Obama's prize.
I'm not saying Obama is bad or anything though. It's not appropriate for an outsider to comment your president.