The Alliance of Automobile Manufacturers, whose members include General Motors Co, Volkswagen AG and Toyota Motor Corp, warned on the impact of the tariffs.
They are also facing higher prices after tariffs were imposed on aluminum and steel.
Rep. Terri Sewell, D-Ala., flanked by John Bozzella, president of Global Automakers, left, and Sen.
The bloc previously offered to open its markets wider to US imports, including cars, as part of a reciprocal but limited trade deal, but Washington rebuffed the proposal.
A study released by a US auto dealer group warned that the tariffs could cut USA auto sales by 2 million vehicles annually and cost more than 117,000 auto dealer jobs, or about 10 percent of the workforce.
The U.S. economy would contract by between US$6.4 billion and US$62.2 billion.
There are also deep fears USA levies would harm the overall Canadian and American economies because collateral damage would reach well beyond the critical, thriving auto sector.
It estimated auto demand will fall by between 493,600 to two million vehicles, resulting in the loss of 82,000 to almost 750,000 auto manufacturing jobs losses. "Whoever says we are foes is spreading fake news".
Commerce Secretary Wilbur Ross said Thursday it was "too early" to say if the United States would impose tariffs of up to 25 percent on imported cars and parts, a suggestion that has been met with harsh criticism from the industry.
Besides the tariffs, the U.S. has threatened European companies with huge fines if they continue to operate in Iran, after Trump reimposed far-reaching sanctions while pulling out of the landmark 2015 deal on curbing Tehran's nuclear programme.
Ross's remarks came at the start of the public hearing on the proposed auto tariffs.
Canadian automotive leaders have warned the US tariffs would be devastating for the highly integrated North American industry and its supply chains, and would lead to large-scale layoffs on both sides of the border.
John Bozzella, who heads the Association of Global Automakers, which represents Honda Motor Co, Hyundai Motor Corp and other foreign automakers, said in his testimony prepared for Thursday that Commerce "so far has been unable to outline any theory explaining how the commercial production of cars and trucks is connected to US national security".
If he makes good on threats of 20 percent to 25 percent tariffs on autos and auto parts, it would be Trump's biggest yet, the Journal reported, adding America a year ago imported $176 billion of passenger cars, $36 billion of trucks, and $147 billion of auto components.
But I would suggest we save that for another day and just commend both of these guys for their superhuman effort. About 10 months after having a baby, Serena Williams plays in the Wimbledon final against Angelique Kerber .
Russian double agent Sergei Skripal and his daughter Yulia were struck down with the poison in March, before later recovering. Searches of properties could last months and waste and litter will be removed as part of the sweep of public areas.
Indeed, reports have now suggested that a fee has been agreed to sell the Welsh global to Leicester City. The Liverpool Echo says that the Reds are happy to offload ward, following the arrival of the Brazilian.
North Korea had long sought an end to the joint military exercises, which they viewed as a provocation and threat. Trump tweeted in June following his meeting with North Korean leader Kim Jong Un in Singapore.
Disney recently raised its bid from $$52.4 billion in December to $71.3 billion divided between cash and stock. Those would be spun off into a new company, and Disney would acquire 21st Century Fox after the spinoff.
SPIETH STARTS STRONG: Defending champion Jordan Spieth birdied two of his first four holes and was 2 under through eight. The noise of that nine iron is Oberholser's abiding memory of playing with Rory McIlroy at the 2007 Open at Carnoustie.
Con Edison is on the scene conducting environmental testing to determine whether asbestos or other contaminants are present. The Fire Department of NY says a high-pressure steam leak has caused street closings in Manhattan's Flatiron District.
The vote means May can keep her promise to take Britain out of the customs alliance and make its own trade deals. Parliament plans to begin its long summer recess Tuesday after a feverish series of debates on Brexit policy.
It it fails to overturn it, the company will have 90 days to change its practices or risk facing an even larger fine. Phone makers don't have to include our services; and they're also free to pre-install competing apps alongside ours.
Authorities learned that the girl's father was inside the house cleaning a handgun he thought was unloaded when it discharged. This incident is now under investigation, but police officers of IN , and it is not yet clear whether filed any charges.
Rep. Mike Coffman to unveil plan to save net neutrality
Coffman's bill would also prohibit ISPs from charging other companies for network interconnection in certain circumstances. The is largely symbolic, given that it will never reach the 60 votes it would need to pass the Senate.
Joaquin Phoenix Joker movie gets a title and release date
Strangely enough, Leto - played the character in 2016's Suicide Squad - will also be getting his own standalone Joker movie. As soon as his deal was finalized, the studio set a September start date with a budget in the moderate $55 million range.