The US Senate is expected to confirm Wall Street billionaire Howard Lutnick as commerce secretary Tuesday, a key step towards the rollout of President Donald Trump's "America First" trade policy with tariffs used as a broad negotiation tool.

Trump has threatened sweeping levies on US allies and competitors alike, looking to tariffs not only as a way to raise revenue but also pressure other countries to act on US concerns.

Lutnick, the chief executive of financial services firm Cantor Fitzgerald, is a close ally of Trump's and has been a defender of imposing tariffs on US imports.

If confirmed, he takes the helm at a department which advocates for US business interests and oversees an apparatus restricting the export of certain tech — including semiconductors — to adversaries like China and Russia.

The role will place him at the frontier of Washington's tariff and trade agenda too, with oversight on the US Trade Representative's office, according to Trump.

And the Commerce Department is in charge of a nearly $53 billion program involving subsidies to stimulate the US chipmaking sector, which Lutnick earlier called an "excellent downpayment" despite stressing the need to review investments.

During his confirmation hearing last month, Lutnick backed sweeping tariffs targeting countries rather than specific products and signaled a hawkish approach to Beijing.

"We can use tariffs to create reciprocity, fairness and respect," he told lawmakers.

He also denied that tariffs would cause widespread inflation, despite economists' concerns that duties could add to consumer costs in the short term and weigh on growth in the longer haul.

Already, the commerce secretary has a broad agenda to implement and negotiations with some of the United States' biggest trading partners to contend with.

Trump has unveiled blanket duties of up to 25 percent on immediate US neighbors Canada and Mexico, threatening to snarl supply chains in key sectors like automobiles and setting off a flurry of negotiations.

The levies, which Trump said were over immigration and drug smuggling, are due to take effect in early March after a month-long pause as talks continued.

Separately, Trump also announced 25 percent tariffs on steel and aluminum imports from 12 March, which officials said would pile atop the hefty rates threatened on Canada and Mexico.

Looking ahead, Lutnick has signaled his willingness for broad "reciprocal tariffs" against US trading partners to start as early as 2 April.

These levies, which Washington said are aimed at correcting "longstanding imbalances" in trade, would be tailored to each country.

Officials would consider both the tariffs countries impose on US goods as well as taxes seen as "discriminatory" — such as value-added taxes.