Reacting to Trump's latest announcement, China said it has imposed "equal" tariffs on USA products. Even in the 1990s, more of the party's members voted against the North American Free Trade Agreement (NAFTA) than Republicans.
The Commerce Ministry said it also is scrapping deals made with Washington in talks aimed at defusing a sprawling trade dispute.
The warning from Beijing comes as the U.S. prepares to levy new tariffs on $50bn worth of Chinese imports.
Trump has vowed to fulfill his campaign pledge to crack down on what he contends are China's unfair trade practices and efforts to undermine United States technology and intellectual property.
The new list is believed to include 800 products, though it is not clear exactly which ones had been dropped. -China trade war fears and dragging down stocks markets as well as soybean prices Friday.
"If the United States side adopts unilateral protectionist measures and damages China's interests, we will immediately react and take necessary measures to firmly safeguard our legitimate rights and interests", foreign ministry spokesperson Geng Shuang said in Beijing.
"I'm a China-basher on trade", he told AFP, but added: "I don't see why we're imposing $50 billion worth of tariffs on China".
Chinese foreign ministry spokesman Geng Shuang said Friday that China's response would be immediate and that Beijing would "take necessary measures to defend our legitimate rights and interests".
All trade talks between China and the United States would be void if Washington imposed trade sanctions, he added. While about a third of USA production goes to the Asian country annually, China a year ago bought more from Brazil.
Earlier in the week, the US Department of Commerce said that it will need to impose tariffs of between 7% and 27% on Spanish olives, because it believes producers in Spain are undercutting US rivals, by selling their product for as much as 26% less than it is worth.
Farmers are also anxious about harm caused by retaliation. At the same time, the broader S&P 500 dipped half a percentage point to 2,768.
When it comes to nukes, there are only two reactors under construction in the US, and it's unlikely ground will be broken on any more large ones in the next decade, Chris Gadomski, a Bloomberg New Energy Finance analyst, said in an email.
The International Monetary Fund (IMF) warned that it is hard to predict how the measures will affect business and consumer confidence.
China has said that it will retaliate with $50 billion in tariffs - rattling financial markets.
The overwhelming majority of products slated for tariffs are old-economy staples, ranging from steel pipes to industrial chemicals to glass-molding equipment. The list released Friday incorporates feedback and criticism received in the ensuing weeks. Consumer goods including mobile phones and televisions aren't being hit with the tariffs. The result is that Americans will nearly certainly face higher costs as companies pay more for parts they need to build cars, dishwashers and tractors, and then firms turn around and pass those higher prices onto consumers.
The plans have elicited a mixed political reaction, drawing praise from Democrats and opposition from Republicans, who typically favour free trade policies.
President Donald Trump has vowed to clamp down on what he calls China's unfair trade practices.
Ten days later, the White House abruptly said it would proceed with the tariffs.
He said: "My message has been consistent: we need to hit our target, which is China and its deceptive and harmful trading practices".
Whether China uses fair means or foul to catch up with America in key technologies, it will do so eventually, just as America and Germany caught up with Britain at the turn of the 20th century.