world. it is friday, february 11th. and i m brianna keilar along with john berman. this morning, a trucker-inspired protest is intensifying, bringing pain to workers and economies on both sides of the u.s./canadian border. now the u.s. is on high alert for protests to begin here at home. demonstrators have been occupying critical roadways between the two countries for several days. this morning crossings in michigan, north dakota and montana are now choked off. and today marks the fifth day that protesters have halted traffic on the ambassador bridge, which connection detroit to windsor, ontario. that bridge is the busiest international crossing in north america. nearly 30% of all trade between the u.s. and canada crosses the ambassador bridge with 10,000 commercial vehicles carrying $325 million worth of goods every day. 50 million of that in auto parts alone. the blockade is hurting major car companies in particular.