Back in the 1980's I knew some Americans who made sure exported US equipment was 'suitably equipped' for the destination market. All had very high security clearances and 'special talents'. The company they worked for has long since been assimilated by a large defence company. Then there was also CoCom that kept American technology in and sometimes better foreign technology out, of the US. I presume that work continues under new generations and descriptions. But look over there at China and Huawei, scary, eh? All the way with the USA? Argh!