What is this extra verse in The Saints are Coming live?

Question

when green day and U2 played at the statium in new orleans, bono sang a verse that was not in the studio version:

"living like birds in the magnolia trees, child on the rooftop mother on her knees. her signs read please. i am an american! "

does anyone know what or where this is from? another song? just a live improv? what? if it's a u2 song, i want it!

Answer 1

THAT WAS just a live improv

Answer 2

It's by a band called The Skids.