A week ago a Russian group that used an Android trojan to steal money using a banking app has been busted [1]. You don't read about this because they targeted a Russian bank so it's of little interest to the people outside Russia. When you read news in Russian you will get much more on the Russian hackers. Same, I believe, is true for Chinese though I don't read Chinese news myself so I could be mistaken here.

[1] http://safe.cnews.ru/news/top/index.shtml?2015/04/13/594827

America is a one of the countrie most targeted by hackers. Because Americans have $$$. Out of that big number, a few hackers get caught, and you hear it on the news. That ones that don't get caught do not make the news.

In other words without knowing how many hackers get away you can't make any assumption about the effectiveness of American hacker catching abilities.

It's probably more an issue of incentive than of capability.

Not that the USA doesn't have plenty of malicious infosec hackers, that's just a silly notion.

"I don't know about it so it doesn't exist."