The 15th democrat and the second Texan has made it official: he’s running for President. But do the numbers add up for Beto ‘O Rourke? We’ll have more on the announcement by a former congressman from El Paso who wants to take on Donald Trump for President. Also, in conservative Midland, a test for the Castle Doctrine following the shooting death of a policeman. And the east Texas mayor who’s banning the STAAR test, and hoping other mayors will follow suit. It looks like some just might. Plus Omar Gallaga with the tech buzz from SXSW, and a whole lot more today on the Texas Standard: