THERE is one certainty on how the Philippine Senate now led by Alan Peter Cayetano will try the impeachment case against Vice President Sara Duterte, a constitutional mandate. The Gang of 13 that voted for a change in Senate leadership on the same day the House of Representatives overwhelmingly voted to impeach Duterte will also be vigilant gatekeepers to suppress the explosive and damning evidence that the House claimed to have itemized, lurid detail after lurid detail, against the Duterte