Who will pay for Donald Trump's border wall?

With the US government in partial shutdown, the president continues to demand funding for his Mexican border wall. Lauren Gambino, in Washington DC, and Bryan Mealer, in Texas, discuss how Trump’s central campaign promise has led to this point of paralysis. Plus, John Harris looks back to the optimism of 1989. To support The Guardian’s independent journalism, visit <a href="https://www.theguardian.com/todayinfocus/support">theguardian.com/todayinfocus/support</a>