White House asks Congress for $5.7 billion for 'steel barrier'
By Marianne LeVine & Quint Forgey
'I can do it if I want': Trump threatens to invoke emergency powers to build border wall
By Josh Dawsey & David Nakamura
How the Border Wall Is Boxing Trump In (Published 2019)
By Julie Hirschfeld Davis & Peter Baker
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