As much as I hate derailing things with politics, this is pretty relevant.
The new Red and Orange line cars could be caught up in the trade war with China.
http://www.universalhub.com/2018/could-our-impending-trade-war-china-hose-orders?nocache=1
As far as I'm aware, only the carbody shells are being manufactured in China. Everything else is being manufactured in the US or another country. There is a 60% US content requirement in the contract and CRRC has exceeded that.