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Trump says walls work. It’s much more complicated
By Gretchen Frazee & Joshua Barajas
The history of U.S. border wall arrests
By Laris Karklis & Brittany Mayes
Trump border visit: President Trump visits border city McAllen, Texas; for immigration and border security meeting; said will "probably" declare national emergency earlier today - live stream
By Kathryn Watson
All coverage
Fact check: Mexico will 'indirectly' pay for a border wall through the new trade deal
By Adam Behsudi
No way out: Trump walks out, Dems remain firm
By Stephen Collinson
President Trump visits the border: Live updates
By Veronica Rocha, Meg Wagner & Amanda Wills