Etymology: Middle English, from Late Latin regulatus, past participle of regulare, from Latin regula rule Date: 15th century
1 a : to govern or direct according to rule b (1) : to bring under the control of law or constituted authority
(2) : to make regulations for or concerning
2 : to bring order, method, or uniformity to
3 : to fix or adjust the time, amount, degree, or rate of
In this sense it means to "facilitate" and cannot be construed to mean "prevent" or "ban" by any stretch of the imagination.
Says who? You?
See the above definition for its etymology of the word and some of its synonyms: "govern", "direct", "control"
What you think the word means "in this sense" is irrelevant.
Congress has the power to govern, direct, and control trade with foreign powers according to the U.S. Constitution and all your Clintonian attempts at semantics won't change that fact.