After%20months%20of%20speculation%2C%20president%20trump%20has%20signed%20an%20executive%20order%20giving%20the%20federal%20government%20the%20power%20to%20block%20us%20companies%20from%20buying%20foreign made%20telecommunications%20equipment%20deemed%20a%20national%20security%20risk.%20%20under%20the%20order%2C%20which%20gives%20the%20secretary%20of%20commerce%20power%20to%20determine%20which%20transactions%20may%20be%20potential%20risks%2C%20no%20single%20company%20is%20immediately%20marked%20as%20a%20threat.%20but%20the%20plan%20is%20largely%20seen%20as%20a%20move%20against%20china based%20huawei%2C%20which%20some%20us%20lawmakers%20have%20deemed%20a%20security%20threat.