Here is a concise original summary based on the information published by the source. SC junks petition questioning session that ousted Cayetano as Senate president RapplerSC settles quorum question on Senate shakeup philstar.comSC junks petition vs Senate session that replaced Cayetano-led majority ABS-CBNGatchalian: SC decision affirms Senate majority's 3 June takeover from Cayetano-led faction 'constitutional' Daily TribuneSC junks bid challenging Senate June 3 session Manila Standard For the full context and any later updates, use the original source link.