Canada wants Mexico to stay in a continental trade pact despite concerns about China possibly using it as a back door to flood the North American market, a source directly familiar with the matter said on Wednesday.

Mexico’s ruling Morena party is so afraid of losing the trade deal that President Claudia Sheinbaum said Friday the government has gone on a campaign to get companies to replace Chinese parts with locally made ones.

Mexico has been taking a bashing lately for allegedly serving as a conduit for Chinese parts and products into North America, and officials are afraid Trump or Canadian PM Justin Trudeau could try

Canada’s point person for U.S-Canada relations says she shares U.S. concerns about Mexico serving as as back door for China into the North American market as a review of the U.S.

Mexican officials fear their country could be left out of the USMCA over alleged trade in Chinese steel and automotive products.