Shumita Basu

A ruling against the administration could also impact the way in which it's used tariffs and the threat of them to negotiate with other countries.

Treasury Secretary Scott Besant told CNBC yesterday there were, quote, other options, but he conceded they were cumbersome and less effective.

Besant has acknowledged in court papers that the legal challenges have left some world leaders wondering about the president's authority on the matter.

And countries have begun planning their domestic policy on the assumption of tariffs sticking around.

Just yesterday, Canada unveiled its federal budget that outlined new spending plans in response to Trump's policies.

Storr said that the administration could have some pathways to continue with tariffs, even with an unfavorable ruling.

If Trump wins and the court disagrees with the plaintiffs, they could further legitimize his authority to regulate aspects of the economy without the input of Congress.

Before we let you go, a few other stories we're following.

The UPS plane crash has left at least seven people dead in Louisville, Kentucky.

The cargo plane erupted into a fireball moments after takeoff.

Reuters reports that authorities were forced to halt flight operations after several buildings near the runway also caught fire after the crash.

The Louisville airport is a global hub for the shipping company's air cargo operations and its largest package handling facility worldwide.

Eleven people on the ground were left with significant injuries.

An investigation is now underway to determine the cause.

The government shutdown is now the longest in history, but lawmakers are starting to talk with a little more optimism than before.

Republican Senator Mark Wayne Mullen suggested to NBC he was, quote, pretty confident of a deal this week and that Democrats had privately indicated they could vote for a short-term funding bill, while Politico reports that up to a dozen Democrats now privately believe it's time to vote to reopen the government.

A 14th vote failed yesterday, with no change to the voting dynamics.

Meanwhile, Transportation Secretary Sean Duffy warned on Tuesday of mass chaos if the shutdown continues into next week and said he may be forced to close some airspace.

And in a somewhat eerie mistake, the state of Maine's biggest health care system inadvertently sent condolence letters to more than 500 of its patients who are still alive, effectively informing them of their own death.

Maine Health said the letters were the result of a computer error and apologized.