The United States is in the grip of a migration crisis unlike it’s ever seen before. The seemingly never-ending flow of migrants into New York, Chicago and Denver has - according to those cities’ mayors - pushed their areas to breaking point. 

The migrants themselves, bussed in from the border with Mexico, often end up in foreign cities without any assistance; injured, unwell and ill-prepared for freezing winter temperatures.

And for president Joe Biden, these historic migration levels during an election year are a political nightmare.

Today, digital foreign editor Chris Zappone on what impact this crisis could have on Biden’s election bid. And why it’s hampering his attempts to give aid to Ukraine.