good old boy
[Informal] a man of the S U.S., variously characterized as easygoing, companionable, assertively masculine, and strongly identifying with his regional lifestyle
1 [sometimes O- B-] [Informal, Chiefly Brit.] an alumnus, esp. of a boys' preparatory school 2 a man belonging to a social, professional, etc. group regarded as prestigious or influential, whose members provide one another with assistance or preferential treatment
The confused use of "good old boys' network/club" to mean "old boys' network/club" is pretty common, but I still found it jarring to read it in a report from a government inspector general:
U.S. Immigration and Customs Enforcement "relies on five different sets of penalties for workers," the Department of Homeland Security's inspector general reported, "resulting in the perception that a 'good old boys' network still existed where certain infractions were simply made to go away."