Piché then furthered his studies at St. Joseph Seminary in Princeton, New Jersey (1987–1988), and at Columbia University in New York City, earning a Master of Philosophy degree in 1994.

In June 2008, he was named pastor of St. Andrew Parish in St. Paul as well as vicar general and moderator of the curia for the archdiocese.

[3] The Vatican announced on June 15, 2015, that Pope Francis had accepted Piché's resignation as auxiliary bishop of Saint Paul-Minneapolis.

The Vatican statement cited the provision of canon law that allows a bishop to resign when some "grave reason" makes it impossible to continue to fulfill his duties.

[5][3] Ten days before his retirement, criminal and civil charges were filed against the archdiocese alleging that warning signs of abuse against minors were willingly ignored.