The USA, more than most other countries, has been reluctant to engage in trade agreements. As a backdrop, the US-Israel Trade Agreement is the oldest agreement involving the US and it went into effect on September 1, 1985. Since then, the US has signed 13 more trade agreements, covering 20 countries in total with the Israeli agreement (with 18 more agreements being deliberated).
But, during the same 30-year period the world has seen 256 new trade agreements involving a large portion of the world, as registered with the World Trade Organization (see my article in The Conversation). Nineteen trade agreements were in force worldwide in 1985. Now there are 275, with 132 agreements being implemented in the last decade. The bottom line is that the US is very reluctant to engage in almost any form of trade agreement compared with the rest of the world.