Earlier in Ottawa, Macron and Trudeau offered an olive branch of sorts by offering Trump a modest measure of support in his historic meeting in Singapore with North Korean leader Kim Jong Un following the G7 summit.
Observers believe that the G-7 Summit, being held on Friday and Saturday in Quebec, Canada, will be marred by anti-globalist demonstrations when US President Donald Trump comes touting an America First agenda hitting allies with trade tariffs and threatens multilateral trade deals.
Kudlow said Trump is not going to walk away from NAFTA negotiations but was interested in a new approach that could include bilateral talks.
"His preference now - and he asked me to convey this - is to actually negotiate with Mexico and Canada separately", Kudlow told Fox News on Tuesday. He prefers bilateral negotiations.
Trudeau also spoke by phone Thursday with Giuseppe Conte, Italy's new prime minister, and British Prime Minister Theresa May.
The president of the U.S. National Pork Producers Council, Jim Heimerl, said Mexico accounted for almost 25 percent of all pork shipments past year, adding that "a 20 percent tariff eliminates our ability to compete effectively in Mexico".
Along with the impact on pork, the trade retaliation also affects $387 million in USA cheese sent to Mexico, the report said.
Mexico will import more pork products from Europe after imposing a 20% tariff on United States pork legs and shoulders in retaliation to steel tariffs, Economy Minister Ildefonso Guajardo has said.
"It was a good system ... and it lasted for a bunch of decades".
A net importer of US steel, Mexico is also putting 25 percent duties on a range of American steel products.
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Now the G7's future is in doubt, with Trump's imposition of steel and aluminum tariffs on his G7 partners, as well as broader disagreements on the trade and climate change.
Mexico's trade negotiators designed the list, in part, to include products exported by top Republican leaders' states, including in, where Vice President Mike Pence was formerly governor, according to a trade source familiar with the matter. "Frank, yes", the official said. On Tuesday, Kudlow doubled down.
Larry Kudlow is the senior economic adviser to Donald Trump.
Canada's Trade Minister Francois Philippe Champagne was blunter, declaring: "What we are seeing is that the world economic order is under pressure, under attack". I know this is just three countries, but still, often times when you have to compromise with a whole bunch of countries, you get the worst of the deals.
At the same time as imposing the tariff on U.S. pork, Mexico opened a 350,000-tonne quota for imports of the meat from other countries. Those issues are different than what the Secretary views as obstacles with trade into Mexico.
The EU also has announced a series of retaliatory tariffs of 25% on roughly 200 American products, including orange juice, that are set to take effect in July.
The Trump administration said it needs to impose tariffs on steel and aluminum imports because overcapacity in those industries globally is hurting USA steel mills and aluminum smelters by driving down the prices of their products, forcing many out of business.
UK Prime Minister Theresa May appeared to take a more conciliatory approach, saying she wanted the European Union to act with restraint and proportion in retaliating to the U.S. tariffs.
During their exchange, Public Safety Minister Ralph Goodale accused Scheer of focusing on partisanship rather than maintaining a common front against American trade belligerence. But they'll have a significant impact on the targeted United States industries.
"From coast to coast, a very strong Team Canada effort is pulling together, except apparently for the leader of the Opposition".