626
Unpatchable vulnerability in Apple chip leaks secret encryption keys
(arstechnica.com)
This is a most excellent place for technology news and articles.
They do have the power and they do compel US companies to do exactly this. When discovered publicly they usually limit it to the first level of the "vulnerability" until more is discovered later.
It is not conjecture, there is leaked documents that prove it. And anyone who works in semiconductor design (cough cough) is very much aware.