I really, really hope you're kidding! Please don't assume that, just because we don't obsess over U.S. current events on this particular fourm, we don't care what's happening there.
Personally, I both care what's happening, have strong opinions about it, and am perfectly happy to discuss it with others. I just don't think of this as the best place for those discussions. I don't mean that in a negative way. There are plenty of intelligent, engaged people here who are more than up to the discussion. I just don't think it's the best place for it. So I do my obsessing on other forums that are specifically political or news-related.
People have different levels of engagement with politics, wherever they are. An awful lot of people living in the U.S. are unaware of some of the things you mentioned, or have no strong opinion about it. Others, while they may have an opinion, don't feel the need to discuss it with others. I'm sure the same is true of U.K. expats (or U.K. residents!) regarding U.K. news & politics.