farm bureau president kevin papp said one out of every three acres of corn and soybeans is exported to mexico, and farmers fear a trade war. >> we need access to those markets. they're growing economy, growing markets, we don't want to do anything to jeopardize any trade. >> reporter: among trump supporters mixed reaction. from pittsburgh -- >> politicians always hit you with taxes. it doesn't matter what they say. >> reporter: to texas -- >> personally if i have to pay a 20% import tax to build this wall that will slow down illegal immigration, then i see it as a win-win. >> reporter: by one estimate, a $15 billion wall could cost each u.s. household $120. tom costello, nbc news, rockville, maryland. >>> there are concerns as well about a trade war with china. this country second largest trading partner after president trump pledged to hit china with high tariffs during the campaign. new tensions come as that country marks the start of the lunar new year. out on of the streets of beijing, people there were celebrating the holiday. >> reporter: jose, china shuts down a full week during