It is well documented that Hauwei has blatantly performed economic espionage against US and Canadian companies. This is evidence. Anyone who doesn't see China as a infosec threat to the US obviously doesn't work in the field.
In 2004 Cisco brought Hauwei to court for stealing source code. It is also documented that economic espionage in sales/contracts by Hauwei contributed to the downfall of Nortel.
Finally China does exactly the same thing to American companies. They can't sell into the Chinese government either. Seems fair to me.