"Efforts to restrict our ability to have other trade deals."
Once again, he's talking about China.
The US does not want Chinese spy tech passing through it's borders. Canada just sent a Chinese spy to NATO High Command. 50,000+ Chinese EV's in Canada and other spy tech is a massive national security concern for the US.
So yes, the US wants to restrict Canada's trade relationship with China because Canada is on their border and what arrives here naturally bleeds between nations.
I don't know what the American attempts to restrict Canada's "language and culture" actually were, but I would imagine it has something to do with the intelligence and information exchange in Canada's new "strategic partnership" with China.
The US is purging China domestically because they've correctly identified the poison. China is now arriving on their doorstep via Canada. The US wants that to end and are trying to use trade as a means of negotiating Canada off the ledge. Carney, the Liberal Party, the power brokers in Toronto and Montreal, and the web of CCP backed influence networks are determined to jump.
The US is trying to give us a choice between a net and a sledgehammer. Carney is intent on finding out what the sledgehammer can do.