CTH is my go to site for Obamagate developments and intelligent analysis. I only wish that all describers of the investigation when referring to the FISA warrant used to surveile Carter Page would emphasize that the warrant was for a tier one surveillance that allowed them to spy on Page or anyone he associated with including Donald Trump. Which is why they went after Page. They knew Page was a dead hole but he was the pretext allowing them to spy on Trump.
Title 1 is the terminology FISC uses.