The pope named Leech as the fifth bishop of Harrisburg on December 19, 1935.[1] After a month as bishop, he had memorized the forenames of all the clergy of his diocese.[3] In 1946, Leech described Howard Hughes's 1943 film The Outlaw as "a destructive and corrupting picture which glamorizes crime and immorality".[4]
On October 19, 1971, Pope Paul VI accepted Leech's resignation as bishop of the Diocese of Harrisburg and appointed him as titular bishop of Allegheny. [1] Leech continued to reside at the episcopal residence. George Leech died on March 12, 1985, at Holy Spirit Hospital in Harrisburg[5] at age 94.[1] He is buried at Holy Cross Cemetery in Harrisburg.[6]
On August 1, 2018, Bishop Ronald Gainer, Leech's successor as bishop of Harrisburg, announced that the names of every bishop of Harrisburg from 1947 onward – including Leech's – would be removed from any building or room in the diocese named in their honor, due to their failure to protect victims from abuse.[7]