2019.02.16 ACLU Files Lawsuit over Trump's Border-Wall National Emergency
The ACLU didn't file lawsuit after any of the last 58 National Emergencies (even Executive Order 9066: the Japanese Internment). Most of them have far less justification than Trump's border one. But to signal virtue, grab headlines, and show their new far left extremism, they are filing suit against national sovereignty and defending our borders. I don't see why they think they have any standing in this case, which might be why the shit-tweet doesn't seem to be backed up by an actual lawsuit.
We'll see how fast this is thrown out of court.