"I am concern that any problems happen in the US might affect Canada in other ways. I also have relatives living in US. My uncle has to pay high price for hepatitis C drug treatment although he has good medical insurance."

I get back from a week of bowhunting and find out you are still bashing the USA. Why doesn't your uncle move back to that Canadian paradise of yours? And why don't you find another favorite hobby, or at least another website to practice yours? We are all aware that you hate America. Aren't there any America-bashing websites that you can hang out at?