"The Trump administration has taken some incredibly positive steps for the American economy, but tariffs will undercut that progress and needlessly hamstring our full economic potential".
What's a trade deficit?
"The President's trade war is going to cost Virginia ag jobs", he wrote in a tweet.
Trump won the presidency with the help of farm-heavy states like Pennsylvania, Wisconsin, Ohio, and Indiana. In addition, China would buy more US crude oil and natural gas exports to quench its thirst for energy.
But he exempted Canada, Mexico and the European Union to buy time for negotiations, a reprieve that expired at midnight on Thursday.
MPs called for even tougher retaliatory steps, with Labour MP John Mann suggesting the United Kingdom impose "golf tariffs" aimed at Trump's properties.
The order stipulates charges of 15 percent to 25 percent on US farm goods including pork, cheese, apples and potatoes, bourbon whiskey and cranberries.
Recently, the president has also slapped tariffs of 25 percent on $50 billion worth of Chinese goods and placed restrictions on Chinese investment in "industrially significant technology".
With the Trump White House focusing attention on the North Korea summit, now just a week away, a decision on a deal with China on trade may be on the backburner.
Canada retaliated against the latest punitive measures last week by proposing levies on C$16.6 billion (£9.6 billion) worth of US exports that would take effect on July 1.
Bashar al Assad goes old school in response to Trump's 'animal' insult
It called for all foreign troops to withdraw from Syria , which the Iranians promptly and very publicly rejected. "We don't have any other options, with the Americans or without the Americans", Assad told RT in an interview .
Canada, Australia, New Zealand, Denmark, Chile, Spain, France, German, Italy, Belgium and the United States can all sell pork legs to Mexico, he said.
But both US neighbors are opposed to that possibility and Mexican President Enrique Peña Nieto and Canadian Prime Minister Justin Trudeau reaffirmed their commitment to reaching a new trilateral deal in a telephone conversation last week.
Cranberries made the list, as did USA apples, with a 20% duty.
He believes that it is at best outdated, and all the concessions that the USA made after World War II to Europe and Asia are no longer appropriate.
He has echoed the administration's position that America has gotten the short end of the stick from China.
Trump has frequently called out allies for being unfair on trade, arguing that they have high tariffs that block out American goods and lead to trade imbalances.
The British government issued its summary of the call first, contending May "raised the US decision to apply tariffs to European Union steel and aluminium imports".
The US decision, widely criticised on the global scene, came as the US, Canada and Mexico renegotiate the 1994 North American Free Trade Agreement (NAFTA), at the urging of Trump who called it a "disaster" for American jobs. According to the official news release, this combined effort will be "a multi-year, multimillion-dollar initiative to champion the far-reaching benefits of trade and oppose tariffs and other barriers".
On Sunday, Canadian Foreign Minister Chrystia Freeland urged Trump to "think hard about the message you're sending to your closest allies".
Canada said proportional duties would be imposed on United States steel, aluminium and consumer goods from July 1, while Brussels is also preparing tariffs on United States products including bourbon, motorcycles and blue jeans.