Move comes after auto industry's lobbying efforts in the U.S.
Dual duties on metals and vehicles may be lifted for some manufacturers
Six-month tariff holiday for U.S. imported goods used in Canadian manufacturing also announced
Levies on U.S. automobiles will not affect auto parts or Mexican vehicles and components
Trump is going ahead with previously announced 25% tariffs on automobile imports
Uncertainty looms over timing of levies, and their impact on trade, jobs and markets
But they said they expected no immediate changes to punishing tariffs
The premier told NBC News it's time for both sides to sit down at the negotiating table
Trump advisors were on television this weekend, claiming again that Canada imposes 250% dairy tariffs
"No room left" for a deal, Trump told reporters on Monday