Mexico's automakers and parts suppliers, citing a lack of clarity about content rules that would allow companies to adjust supply chains, as well as disruptions caused by the coronavirus pandemic, are lobbying for key rules in the new North American trade pact to be implemented in 2021 instead of June 1 as scheduled.

As the coronavirus continues to wreak havoc on global supply chains, the automotive industry faces another potential upset over a June 1 entry-into-force date for all sections of North America's new trade pact.

Prime Minister Justin Trudeau and President Donald Trump agreed Wednesday morning to close the border to non-essential traffic in both directions. Production in both countries isn't expected to be affected, if automakers continue to operate their factories. 

The groups, including AIADA and NADA, said many questions on the new rules remain unanswered and will require additional time to interpret and implement. The APMA in Canada says it would like to see enforcement begin Jan. 1, 2021.