Trump declares "national emergency" to get his wall

The Boston Globe: ' After teasing it for months, President Trump is officially declaring the US-Mexico border a ‘‘national emergency,’’ which will allow him to circumvent Congress’s constitutional powers to control spending and divert federal funds toward his much ballyhooed border wall.'
Congressman Ted Lieu:

Why didn't @realDonaldTrump declare a national emergency 35 days ago, or last year? Because he knows he will lose in court.
There is no national emergency:
-Border crossings at around a 20-year low-Violent crime is down-Property crime is down-Immigrants commit less crime https://t.co/z664hA1ukJ
— Ted Lieu (@tedlieu) February 14, 2019