Ukraine's Volodymyr Zelensky meets Joe Biden and Mike Johnson after US $61bn aid package stalls - live updates - BBC News
Republicans will not approve US military aid to Ukraine unless Democrats back a deal on border security.
Topped with razor wire and split by mountains, the infamous border wall that cuts through the desert between Mexico and the state of California has long been a focal point for America's heated debate on migration.

But with funding for the war in Ukraine and Gaza on the line in Washington DC, the issues at the wall have taken on new urgency.

Since the start of the year, about two million migrants have been apprehended at the US-Mexico border for crossing into the country illegally, a record high.

The futility of the border fortifications is obvious near the small town of Jacumba. Wherever the wall meets the mountains it simply stops, creating a large gap that anyone can walk through to enter the US, and serving as a visual reminder of America's broken immigration system.

In a Senate vote this week, Republicans blocked additional funding for Ukraine or Israel unless the Biden administration agrees to hardline immigration reform.

"I will not go back to South Carolina and try to explain why I helped Ukraine, Taiwan and Israel and did nothing to secure our own border. I will help all of our allies, but we got to help ourselves first," Republican Senator Lindsey Graham told media on Thursday.

You can read more about the border crisis here.