The Trump administration said Tuesday it would offer $12 billion in emergency funding for farmers hurt by the trade tiff - though even that plan drew scorn in local media.
Trump told reporters after meeting Juncker on Wednesday that the European Union would start, nearly immediately, to buy a lot of soybeans.
"Tariffs are taxes that punish American consumers and producers".
Some members of Trump's own party agreed.
Trump declared earlier Tuesday that "Tariffs are the greatest!" and threatened to impose additional penalties on US trading partners as he prepared for negotiations with European officials at the White House.
Trump has also imposed tariffs on $34 billion of Chinese imports - a figure he has threatened to raise to $500 billion - in a dispute over Beijing's aggressive drive to supplant USA technological dominance.
Juncker concurred and said the goal was bringing those tariffs to zero.
"We made a deal today", Juncker said.
"Ryan's comments come just hours after Trump tweeted that tariffs were the "greatest" and viewed America as a "'piggy bank" that was being "robbed".
He said past leaders allowed the USA trade deficit to balloon and complain: "They surrendered".
The outcome seemed a victory for Trump, who had assured supporters that his confrontational trade strategy would bear fruit, and who appears to have conceded little in the talks with the EU.
The imposition of punishing tariffs on imported goods has been a favored tactic by Trump, but it has prompted US trading partners to retaliate, creating risks for the economy. Both the US and the European Union drop all Tariffs, Barriers and Subsidies!
US President Donald Trump will showcase American-made products ranging from beef jerky and cowboy boots to the Lockheed Martin Corp F-35 fighter jet today, as his administration wages trade battles on a series of fronts. "If the problem is the deficit, then we can't fix it", the official said. Sen.
Trump had pressed European leaders hard on trade in recent weeks, including during his meetings with North Atlantic Treaty Organisation allies in Brussels. The administration recently announced a $12 billion temporary aid package for farmers - including soybean producers - dealing with the impact of retaliatory tariffs. "Now they have to pay, '" Reinsch said, echoing the president's argument. "This is the way it's going to go - make our farmers great again".
Trump says he's in Granite City, Illinois, on Thursday "to celebrate a victory".
The No. 2-ranked House Democrat says he is pleased jobs will be created but stressed the financial impacts US farmers face.
"I don't think our farmers and ranchers long-term want these programs". "The aspect of reinvigorating our steel industry is a good objective, but the way the that should have been done is with targeted actions, not scattershot actions". The administration also sought to signal that they have the best interests of farmers in mind.
It is a response to a similar USA policy. "That, to me, is the much bigger issue here where we're being suppressed or oppressed because of our outspoken political views or criticism of the current president".
Meanwhile, Mr Trump has accused China of "vicious" tactics, tweeting that China was specifically targeting United States farmers with retaliatory tariffs because "they know I love & respect" them.