Ukraine aid faces tough renewal challenge.

The $48 billion Ukraine aid package approved by Congress in December has about $6 billion left, meaning US funding for weapons and supplies could dry up by midsummer. The White House is discussing a new package, but it could face opposition from a small but vocal group of Republicans that wants to slash spending on Ukraine. Lawmakers from both parties say they fully support keeping the aid flowing, but timing for the next round is a major issue, especially as lawmakers continue to grapple with a host of other issues.