Banking and finance roundup

To keep your sex business free from the coils of federal regulation, your best bet might in fact be Ted Cruz, implacable opponent of Operation Choke Point [Elizabeth Nolan Brown; more from Snopes on rather silly attacks on Cruz for doing job lawyers are expected to do for clients in Texas case]
Snoopy, you’re not systematically important: judge frees MetLife from SIFI designation under Dodd-Frank [Thaya Brook Knight/Cato, John Cochrane]
What with Sen. Elizabeth Warren trying to put a lid on some companies’ criticism of the Labor Department’s fiduciary rule, hope it’s still OK for the rest of us to talk about it [Thaya Brook Knight, Cato]
Sen. Warren isn’t only one using letters to SEC to browbeat businesses: New York City elected Public Advocate Letitia (“Tish”) James tries to hassle gunmaker Sturm Ruger to comply with various demands of gun control advocates [Manikandan Raman, Benzinga/Yahoo; more on Ms. James and her blames]
Next term Supreme Court will consider case on scope of insider trading law, Salman v. U.S. [Ira Stoll, more] “Returning to Common-Law Principles of Insider Trading After United States v. Newman” [Richard Epstein, Yale Law Journal on Second Circuit’s decision via Stoll]
DoJ cracks down on big-investor activism — at least when of a sort antitrust enforcers don’t like [Matt Levine]