Again, the problem is you're bringing the US down the Beijing's level to some extent with these moves (and certainly give big time justification and confirmation to Beijing's constituency), and I'll just put an honest opinion that Chinese American voters as an actual voting bloc is completely irrelevant in US politics ( not to mention plenty of the people you're describing aren't even actual US citizens. ) so the odds of Wechat based rumor actually impacting a major US election seems to be a questionable argument. As for some dumb shite like that Vancouver race where one of the candidate spread some crazy racist shite in Chinese, that doesn't really take wechat to pull off