In its first legal test, a San Francisco judge is set to consider whether to temporarily block US President Donald Trump’s executive order to strip federal funding from so-called sanctuary cities.

These are cities refusing to help federal agents deport unauthorised immigrants. San Francisco could lose more than $1bn a year, potentially spelling the end of some community programmes that depend on the money.

Al Jazeera's Heidi Zhou-Castro reports from San Francisco, California.

US & Canada, Politics