Enforcement of tougher immigration policy has started in Arizona and in other parts of the country as President Donald Trump's administration enters its second week. Meanwhile, the fate of a new memo pausing distribution of federal grants and loans was challenged in the courts after hours of confusion Tuesday for entities and programs that typically receive billions of federal dollars.

The spending freeze on federal assistance could affect everything from aid to nonprofits, universities, small business loans and state and local government grants.

Trump's aid freeze has left humanitarian projects in Ukraine without funding in the middle of winter, prompting concerns that many would have to close down. Zelensky's comments suggest that Kyiv is hoping that Europe and domestic funders can make up the shortfall as U.S. policy is being worked out.