Comment: Here is absolute proof.

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Here is absolute proof.

http://www.leg.state.or.us/ors/558.html

This is my states Weather Modification law, hosted on their own server. It even outlines licensing.

Edit: for those too lazy to check the link.

558.020 Purpose of ORS 558.010 to 558.140. The purpose of ORS 558.010 to 558.140 is to promote the public health, safety and welfare by providing for the licensing, regulation and control of interference by artificial means with the natural precipitation of rain, snow, hail, moisture or water in any form contained in the atmosphere. [1953 c.654 §2]