WASHINGTON: US business leaders have raised concerns over President Donald Trump’s latest tariff plan, warning that the sweeping new duties on imports could drive up costs, disrupt supply chains, and hurt American companies and consumers.

Standing on the White House lawn, Trump unveiled a baseline 10 per cent tariff against almost all US trading partners in the world from 5 April, and an additional top-up rate from 9 April for other countries currently imposing tariff and non-tariff barriers against US companies.

Trade groups reacted with dismay to the measures, which would see most goods imported from China, for example, facing an additional tariff totalling 34 per cent on top of existing levies.

“Applying new tariffs at this scale will create change and disruption that restaurant operators will have to navigate to keep their restaurants open,” the National Restaurant Association said in a statement.

“The stakes for manufacturers could not be higher,” said Jay Timmons, the president of the National Association of Manufacturers. “Many manufacturers in the United States already operate with thin margins.”

“The high costs of new tariffs threaten investment, jobs, supply chains and, in turn, America’s ability to outcompete other nations and lead as the preeminent manufacturing superpower,” he added.

Alongside China, the European Union, India, and several other top US trading partners will also face new tariffs of at least 20 per cent from 9 April.

“These broad tariffs are a tax increase that will raise prices for American consumers and hurt the economy,” US Chamber of Commerce chief policy officer Neil Bradley said in a statement before the tariffs were unveiled.

“We urge policymakers to instead focus efforts on accelerating the pro-growth agenda of extending our current tax policy, rebalancing regulations, and unleashing the full potential of American energy,” he added.

In a recent analysis, Yale University’s Budget Lab estimated that a 20 per cent across-the-board tariff on imports could cost the average US household at least $3,400 — a painful cost-of-living adjustment for most Americans.

“President Trump’s sweeping global and reciprocal tariffs are massive tax hikes on Americans that will drive inflation, kill jobs on Main Street, and may cause a recession for the US economy,” Consumer Technology Association chief executive Gary Shapiro said in a statement.

“These tariffs will raise consumer prices and will force our trade partners to retaliate,” he said.

Despite the widespread condemnation, some lobbying groups were more positive about the announcement.

“Today’s trade action prioritises domestic manufacturers and America’s workers,” said Scott Paul, President of the Alliance for American Manufacturing.

“These hardworking men and women have seen unfair trade cut the ground from beneath their feet for decades,” he continued.

“They deserve a fighting chance,” he said, calling Trump’s announcement “a necessary step in the right direction.”