How do I remove tax from Amazon orders inside of Shopify?

How to remove tax that Amazon remits, but Shopify says was charged.

Amazon Shopify orders have a payment method of amazon_payment. You can upload a rule to check for this method and remove tax. Here are the steps:

1. Login to Connex.
2. Click rules > my rules on the left.
3. Click upload.
4. Upload this spreadsheet.