White House trade advisor Peter Navarro said Monday that an offer by Vietnam to eliminate tariffs on U.S. imports would not be enough for the administration to lift its new levies announced last week.

“Let’s take Vietnam. When they come to us and say ‘we’ll go to zero tariffs,’ that means nothing to us because it’s the nontariff cheating that matters,” Navarro said on CNBC’s “Squawk Box.”