https://www.ft.com/content/193bbffc-38af-11e7-821a-6027b8a20...
please don't bother mentioning the minority stake from CIIC, if that is a national security threat to the US, then all successful Chinese firms have the same issue.
0. https://www.pri.org/stories/2016-06-03/how-china-has-censore...
(It is worth noting that these remarks came in the middle of a bidding war between Ant and Euronet (https://techcrunch.com/2017/03/14/euronet-alibaba-ant-financ...). Take the situation however you want...)
Either way, other articles (https://www.theverge.com/2017/5/9/15595338/alipay-us-expansi...) point out that Alipay has a presence in the United States... the concern seemed pretty specific, and not really like the wholesale blocking of major American (and other) sites that China engages in.
http://www.telegraph.co.uk/news/worldnews/northamerica/usa/1...