Trump tells Canada to lower their dairy tax of 270%

Canada says…

" There are rates that high on the books, but they would only be charged if U.S. exports exceed predetermined tariff rate quotas, which the dairy exports don’t come close to meeting. "

So then… If it's never used, why have it?

https://www.factcheck.org/2025/04/trumps-misleading-claim-on-canadian-dairy-tariffs/