Congressional Democrats are warning that a new round of tariffs introduced by US President Donald Trump could significantly increase costs for American households, as the administration seeks to replace federal revenue lost after a recent court ruling against earlier trade measures.

A study released Friday by Democrats on the Joint Economic Committee estimates that import taxes imposed by the administration could cost US households an average of $2,512 in 2026. That figure represents a 44 per cent increase compared with last year’s estimated burden of $1,745 per household.

The report comes as many American consumers are already dealing with higher living expenses and rising fuel costs linked to tensions in the Middle East, particularly the ongoing conflict involving Iran.

Maggie Hassan, a Democratic senator from New Hampshire and the top Democrat on the committee, criticised the administration’s trade strategy. She said the government has continued introducing tariffs even after a legal setback earlier this year.

“Despite a Supreme Court ruling that much of the tariff agenda is illegal, the administration refuses to provide relief for families,” Hassan said. She added that additional tariffs could drive prices even higher for households already struggling with increased costs.

The White House dismissed the report. Spokesman Kush Desai described the analysis as inaccurate and defended the president’s trade policy, saying tariffs remain a key tool for renegotiating trade agreements, lowering certain costs and encouraging investment in the United States.

The debate follows a major decision by the Supreme Court of the United States on February 20. The court ruled that the administration did not have the authority to impose wide-ranging tariffs under the International Emergency Economic Powers Act of 1977, which had been used to justify tariffs on imports from nearly every country.

As a result of the ruling, the government is expected to refund importers who paid the tariffs. The total amount of refunds could reach about $175 billion.

In response, the administration has begun introducing new trade measures using other legal authorities. Officials have already implemented a 10 per cent tariff under the Trade Act of 1974 through Section 122, with the possibility of raising it to 15 per cent. However, tariffs under that provision can only remain in place for 150 days unless Congress approves an extension.

The administration is also turning to Section 301 of the same law, which allows tariffs on countries accused of unfair or discriminatory trade practices.

Earlier this week, US Trade Representative Jamieson Greer launched an investigation into whether 16 trading partners, including China and the European Union, are producing excess goods that harm American industries.

Democrats argue that tariffs ultimately fall on consumers. They point to analysis from the Congressional Budget Office indicating that importers often pass tariff costs on to buyers, while domestic producers may also raise prices because of reduced foreign competition.

The renewed push for tariffs comes ahead of November’s midterm elections, as economic concerns remain a central issue for voters facing higher living costs and volatile energy prices.

Global oil prices surged above $100 per barrel on Thursday after fresh attacks linked to Iran targeted oil storage facilities in Oman, offsetting the expected market relief from a record emergency oil release announced a day earlier.

Benchmark Brent crude climbed sharply during trading, briefly moving above the $100 mark before easing slightly. Prices still remained significantly higher than earlier in the week, reflecting continued volatility in global energy markets.

The spike came despite an unprecedented move by the International Energy Agency, which on Wednesday announced a coordinated release of 400 million barrels from emergency stockpiles held by its 32 member countries. The measure is the largest such release in the agency’s history and more than twice the volume deployed after the Russian invasion of Ukraine in 2022.

Shortly after the announcement, Iranian forces launched drone strikes targeting fuel storage tanks and silos at the Salalah Port, triggering fires that local authorities were still working to contain late Wednesday.

British maritime security firm Ambrey confirmed damage at the site, while Danish shipping company Maersk temporarily suspended port operations as a precaution.

Omani officials said the attacks had not disrupted domestic fuel supplies, though investigations into the incident were continuing. Iranian state media reported that President Masoud Pezeshkian assured Haitham bin Tariq that the events would be examined.

The security situation also worsened at sea. At least six vessels were reportedly struck in the Persian Gulf and the Strait of Hormuz, including a container ship hit by a projectile near the United Arab Emirates and two tankers damaged in waters near Iraq. Monitoring groups such as UK Maritime Trade Operations attributed the incidents to Iranian forces or allied groups.

Since the start of the conflict, at least 16 ships have reportedly been struck in the region, intensifying concerns about the security of global energy supplies.

The Strait of Hormuz normally carries about one-fifth of the world’s oil shipments. However, analysts estimate that exports of crude and refined products from the region have fallen to just 10–15 percent of pre-war levels as shipping traffic declines sharply.

In response to the crisis, several countries are contributing to the IEA’s coordinated reserve release. The United States alone plans to supply 172 million barrels, while Germany, France and Italy have also confirmed they will tap emergency stockpiles. Japan said it will begin releasing oil next week.

IEA executive director Fatih Birol described the crisis as an oil market disruption “unprecedented in scale,” saying the coordinated action reflects strong cooperation among major energy-consuming nations.

Despite the intervention, analysts say the reserve release may have limited impact if the disruption to supply continues. Warren Patterson, head of commodities strategy at ING, said the release could not fully offset the roughly 15 million barrels per day currently affected by the conflict.

Economists also warn that prolonged disruptions could push oil prices significantly higher. Analysts at Oxford Economics said crude prices could approach $140 per barrel if tensions persist, a level that could trigger a mild global recession.

Kristalina Georgieva, managing director of the International Monetary Fund, has warned that sustained increases in oil prices would likely push global inflation higher and slow economic growth worldwide.

Energy markets remain focused on developments in the Strait of Hormuz, with analysts saying the restoration of normal shipping routes will be critical for stabilising oil prices in the coming weeks.