NAHB noted that 25% of building materials come from Canada and Mexico.

The National Association of Homebuilders (NAHB) sent a letter to President Trump Friday asking for tariff exemptions on building materials from Canada and Mexico. The letter follows a Trump announcement that the U.S. was levying tariffs of 25% on Canadian and Mexican imports that would go into effect on Saturday, which would hit homebuilders hard.

Source: housingwire.com