Because American politicians are corrupt short sighted greedy fools, half of U.S. military equipment, medical equipment, and prescription drugs have some involvement with Chinese parts and manufacturing. If China has cut military ties, no doubt that key parts, chips, and components needed to keep our military war machine active will be cut as well. This will have a HUGE impact on American military readiness.
And the Chinese knew this and know this the whole time. Bribe a couple of Congressmen with whores and money, and now WE control the American Military. LOL!