I haven't read any reaction from Canada, but European nations are ready to fill the void if the US backs out of trade agreements.   One (Germany?) said they NEED international agreements to boost GDP and they'd be very happy to work with China - not sure if we're as "giveaway" as some say, but trade agreements can be renegotiated if necessary without nixing them...  A 10% (or 35%) tariff on imported goods would put a burden on EVERY middle class/lower income consumer without any guarantee that TV or "trinket" factories would be set up/create US jobs... tariffs could add an extra $200 cost/month per consumer.  Hip-shot slogans don't wash - major policy changes need analysis to determine short and long-term effects.   Nationalism and isolationism haven't worked well with North Korea.