Is that specific enough for the mindless media?
Well, he might want to explain (a) what he thinks is disastrous about it, and (b) how he intends to renegotiate a FREE TRADE agreement in a way that would allow him to impose punitive sanctions (which just happens to be the opposite of free trade).
If you care to understand about the philosophical underpinings of the free traders, it involves the movement of goods, services, capital and LABOR across borders without hindrance or let.
So-called free trade has real life consequences, that includes the illegal alien invasion of our country.