On today's podcast:

1) A hard-fought bipartisan deal to impose new US border restrictions and unlock Ukraine war aid is on the brink of collapsing in the Senate, where Republican support crumbled in the face of opposition from GOP presidential front-runner Donald Trump.

2) UBS Group AG will buy back up to $1 billion in shares this year, as the bank seeks to keep investors focused on the upside of its complex integration of Credit Suisse.

3) Boeing Co. executives have spent the past month grappling with the aftermath of a near-catastrophe on an airborne 737 Max jet. As the US planemaker works through its latest crisis tied to manufacturing lapses, a new risk looms: a labor rift 10 years in the making.