U.S. President Donald Trump’s import tariffs will do more harm than good to the U.S. economy, say the vast majority of economists polled, who also expect the Federal Reserve to raise interest rates this year more than previously thought.

The U.S. central bank will raise interest rates next week, said all 104 economists polled by Reuters between March 5 and March 13, with three more hikes to follow this year, driven by a solid labor market underpinning optimism. That is more than two additional hikes after March expected in a poll taken a few weeks ago.

Nearly 90 percent of 71 respondents also said they were concerned tariffs on steel and aluminum imports would lead to a wider trade war, including almost a third who said they were “very concerned.”

“This is not new. We have seen these trade battles back and forth in the past as well. But what is different this time is the persistence and the sense that we are only looking at the tip of the iceberg on protectionism,” said Ethan Harris, head of global economics at BofAML.

“What is concerning also is the slippery slope risk here. There is no sign of any let-up in this push for protectionism with the frequency of new proposals growing. It will be very surprising if there isn’t some measured retaliation over time from major trading partners.”

Nearly 80 percent of 60 economists who answered a question on the tariffs said they would do more harm than good and the rest said it would do nothing or very little. Not one respondent said they would benefit the world’s largest economy.

“The tariffs are likely to be met with retaliation from U.S. business partners and completely ‘miss the point’ as China is mostly kept out of range. They have the potential to become highly inflammatory and to undermine the global economic expansion,” noted Stefan Koopman, market economist at Rabobank.

The Organization for Economic Cooperation and Development on Tuesday raised its global growth forecasts to the highest since 2011 but warned the world economy was vulnerable to trade tensions after the import tariffs.

While Trump’s decision did very little to world stocks, the U.S. dollar extended its retreat against most major currencies. A separate Reuters poll of foreign exchange strategists showed that will continue this year.

The latest poll showed the U.S. central bank will raise the federal funds rate by 25 basis points at the March 20-21 meeting to 1.50-1.75 percent and repeat that move three more times, by once a quarter, taking the base rate to 2.25-2.50 percent by end-2018. (SD-Agencies)