USA sim card for non resident
I will be travelling down the west coast in a few days passing through Washington, Oregon and California. I have just completed a tour in Asia where getting a sim card is easy and inexpensive, allowing free incoming calls. My wife has grown accustomed to speaking to me every day, even in remote areas of Laos and China, so she wants to be able to continue this while I am in the USA.
My research is not bearing fruit so I want to ask this community for guidance. I need a sim card for two months only. Ideally it will have free incoming calls and will allow long distance to Canada but that is not essential. This question may best be answered by non-residents of the USA but all input is gratefully received.