The Pennsylvania Supreme Court is set to weigh in on numerous high-profile cases during an unusually lengthy oral argument session expected to begin Tuesday in Harrisburg.

A full complement of the high court is expected to spend three days hearing arguments in 17 cases, considering questions over the legality of Philadelphia’s tax on sweetened beverages, the custody rights of same-sex partners, how posts on Facebook could impact discovery in a civil lawsuit, and the capital case against a man who sent Pennsylvania authorities on a lengthy manhunt after a sniper attack outside a police station that left one officer dead.