In addition to the lawsuit filed on Monday, Feb. 18, 2019 by 16 states , at least three more lawsuits have been filed against the Trump administration's national emergency proclamation .
Public Citizen Sues Trump on Behalf of Affected Texas Landowners...
Muzaffar Chishti, Sarah Pierce, and Austin Rose, Apr. 25, 2018 - "Opening a new front in his campaign to crack down on illegal immigration, President Donald Trump in early April 2018 called for the deployment of up to 4,000 National Guard troops...
Vanda Felbab-Brown, Brookings
[This is a very long, rich, detailed look at the border wall, with marvelous graphics. It deals with the price tag, smuggling, crime, the U.S. economy, communities and the environment, and much more. Recommended!]