For at least a generation the U.S. has propped up the global economy by absorbing the world's surplus of goods. That's not good for the U.S. or its trading partners.
Unless the mainstream offers something better, he will be the voice of economic nationalism.
The government kiboshes Broadcom’s purchase of Qualcomm because it will lead to less R&D and investment (the better to increase profits) at a militarily important tech leader.
The problem is not Trump’s imposition of tariffs on aluminum and steel; it’s the rest of his clueless China policy and the continuing denial of the China threat.