But in a "Squawk on the Street" interview, Ross deflected an attempt at a straight answer, saying the tariffs of 25 percent on steel and 10 percent on aluminum as announced Thursday by the president would have a "fairly broad effect."
In a second run at pinning Ross down on whether that means all trading partners — without exemption — the Commerce secretary said, "That's what the president seemed to announce yesterday." He added, "Let's assume that to be the case."
Ross contended that either way, Trump's tariffs are "no big deal" because the price increases on steel and aluminum would be negligible.
The impact that tariffs might have on American relations with Canada at a time when NAFTA is being renegotiated by the United States, Canada and Mexico knocked the stock market for a loop in a sell-off that started Thursday and continued early Friday.
WATCH: Tariffs will have broad but trivial impact on prices, says Ross