DAVOS, Switzerland — The United States is committed to free and fair trade while bracing itself for possible retaliation from China over new tariffs, top U.S. Cabinet members said Wednesday, ahead of a much-ballyhooed visit by President Donald Trump to the World Economic Forum in Davos, Switzerland.

Days after Trump backed new tariffs on imported solar-energy components and large washing machines, his combative commerce secretary, Wilbur Ross, conceded that China could respond by imposing its own tariffs on U.S. products.

"In terms of any trade action you take, there's always potential for retribution or retaliation and that's up to the Chinese to decide," Ross told journalists Wednesday as part of the largest-ever U.S. delegation to the annual Davos gathering of business and political leaders.

Ross insisted that the U.S. government is not protectionist and that the tariffs are meant to deal with what he termed "inappropriate behavior" by other countries.

Many in the Trump administration think that much of the global trading system is rigged against the U.S. and that many countries have not been playing fair, using unfair methods to gain a competitive advantage.

"Trade wars are fought every single day," Ross added. "Unfortunately, every single day there are various parties trying to violate the rules, and trying to take unfair advantage of things ... the difference is that U.S. troops are now coming to the rampart."

Ross said it wasn't for him to set Chinese policy about whether to retaliate or not but he warned that if Beijing were to do so, there would be a question as to what the U.S. in turn would do.

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The "America First" strategy that helped Trump win the presidency is partly a reflection of dealing with that apparent rigged system. It's already seen the U.S. withdraw from the Trans-Pacific Partnership, a trade deal with 11 countries, and seek a renegotiation of the North American Free Trade Agreement with Canada and Mexico. Trump has also pulled the United States out of the Paris agreement on climate change, a move that reinforced fears that "America First" means the U.S. turns inward and opts for a more isolationist approach.

A day after Canadian Prime Minister Justin Trudeau and Indian Prime Minister Narendra Modi championed free trade, European leaders did likewise on Thursday.

While acknowledging that it is legitimate for each country to say "My country first," Italian Prime Minister Paolo Gentiloni said trade was the means towards economic growth — and that protectionism runs counter to that.

German Chancellor Angela Merkel said there is too much "national egoism" at the moment and that the World Economic Forum's motto of "creating a shared future in a fractured world" was "exactly right" for 2018.

"We believe that isolationism won't take us forward," she said. "We believe that we must cooperate, that protectionism is not the correct answer."

Trump is due to address the Davos forum Friday and there's been concern among some participants about what his economic and trade policies could do to the global economy — whether they will bring an end to decades of increasing trade and globalization. Trump's visit has sparked scattered, small protests in Switzerland and some participants among the 3,000 on hand say he's not welcome because of his controversial tweets, "America First" tack, and trade policies.

U.S. Treasury Secretary Steven Mnuchin brushed off concerns about a possibly tough reception, saying: "Our objective is to be here to interact with important counterparts."

Mnuchin took a softer line than Ross, insisting that the Trump administration believes in "free and fair trade" and just making sure that "U.S. opportunities are equal to other people's opportunities in the U.S."

French President Emmanuel Macron and German Chancellor Angela Merkel pose during their meeting at the Elysee Palace in Paris, France on Jan. 19, 2018. Christophe Petit Tesson / Reuters

Mnuchin said Trump's over-riding priority is to boost U.S. growth, and that "economic growth in the U.S. is obviously good for the rest of the world," he said. "We are open for business."

Trump is due to hold meetings with political leaders, including British Prime Minister Theresa May and President Paul Kagame of Rwanda, as well as with business leaders, notably from some big European corporations. He is expected to trumpet his recent tax reform package, which saw corporate tax rates slashed in the U.S., to attract business into the U.S.

Those tax reforms, Mnuchin said, have already reaped big dividends, with many U.S. businesses, including Apple, saying they will repatriate money back into the U.S., pay more taxes and hand out bonuses to staff.

"The response from U.S. business has been even better than we expected," he said.

Mnuchin also sought to downplay concerns that China was preparing to ease up on its purchases of U.S. Treasurys, an idea that recently surfaced and caused jitters in financial markets, including a fall in the dollar.

He said the U.S. Treasury market is "one of the largest and most liquid in the world" and that the reports about China were "not accurate" and "not something we are particularly concerned about."

Though insisting that matters relating to the short-term value of the dollar were not something he would comment on, Mnuchin said the recent weakness in the dollar is good, as it can help U.S. exporters, for example. Longer-term, he said the strength of the dollar is "a reflection of the strength of the U.S. economy."

On Wednesday, the dollar was down further against most currencies, hitting a three-year low against the euro.