The USA, in common with most of the world, is weaker economically than China, because for decades the "advanced" countries farmed out manufacturing to countries with cheaper labour and wore blinkers when it came to realising that China was insiduously building a near monopoly in manufacturing. Now, having destroyed their "home based" industries, it would take a decade at least to get them back to any sort of presence.
If Trump wants tarrifs, they should be imposed on items like Apple products manufactured outside the USA. But, of course, that would hurt his personal wealth and power, so Apple products are exempt. That is just one example, of course. Many big American businesses make their products abroad. Apple is merely the biggest financially.

HMIM, and anybody who believes he has anybody's best interests at heart except his own deserves whatever they get......