I don't believe they are violating a service agreement; I expect they have the discretion to reject anything they want. Not that it's justified--- it isn't. Their contact probably allows them to give it to the government when asked. The U.S. government will often seize funds in transit if either the sender or beneficiary is on the wrong list (OFAC in particular). It's also possible their banks threatened to close their accounts if they didn't stop helping the truckers. It's still shitty of them, but I doubt they're violating any of their written agreements.
I don't believe they are violating a service agreement; I expect they have the discretion to reject anything they want. Not that it's justified--- it isn't. Their contact probably allows them to give it to the government when asked. The U.S. government will often seize funds in transit if either the sender or beneficiary is on the wrong list (OFAC in particular). It's also possible their banks threatened to close their accounts if they didn't stop helping the truckers. It's still shitty of them, but I doubt they're violating any of their written agreements.