White House asks Congress for $5.7 billion for 'steel barrier'
By Marianne LeVine & Quint Forgey
House Armed Services Committee chair says President Donald Trump can declare national emergency
By Nataly Pak
How the Border Wall Is Boxing Trump In (Published 2019)
By Julie Hirschfeld Davis & Peter Baker
'I can do it if I want': Trump threatens to invoke emergency powers to build border wall
By Josh Dawsey & David Nakamura
Trump threatens national emergency in 'next few days' over wall and shutdown
By David Taylor & Martin Pengelly
Opinion | No, Trump Cannot Declare an 'Emergency' to Build His Wall (Published 2019)
By Bruce Ackerman
Trump's wall: How much has been built during his term?
By Christopher Giles