Section. 3.

In furtherance of the policy set forth in section 2 of this Act, the United States will make available to Taiwan such defense articles and defense services in such quantity as may be necessary to enable Taiwan to maintain a sufficient self-defense capability.
The President and the Congress shall determine the nature and quantity of such defense articles and services based solely upon their judgment of the needs of Taiwan, in accordance with procedures established by law. Such determination of Taiwan’s defense needs shall include review by United States military authorities in connection with recommendations to the President and the Congress.

要は、その時のアメリカのやる気と実際のコミットメントによるわけだが