"Now, a government watchdog group run by former Obama administration lawyers is suing to force the Trump administration to disclose its legal theory."

That's absolutely hilarious. Perhaps those same lawyers will reveal the legal theory behind the thousands of drone strikes on foreign lands that Obama personally authorized. I'd also love to hear their legal rationale for Obama ordering the summary execution of two American citizens in Yemen, also by drone strike. 

At least Trump didn't kill any civilians with his show-boating. Obama's drone strikes killed thousands.