January 11, 2019
A row with Democrats over funding the wall has left the government partially shut down for 20 days, leaving some 800,000 federal employees unpaid.
On Saturday, the shutdown becomes the longest in US history.
Mr Trump says the wall, a key campaign pledge, is needed to tackle a security crisis of illegal immigration.
The Democrats say the wall is an "immorality" and a waste of taxpayers' money.