Former state lawmaker David Nangle will plead guilty to federal fraud charges By Emma Platoff Globe Staff,Updated February 23, 2021, 5:31 p.m. Email to a Friend David Nangle served in the Massachusetts House for decades before he was indicted last year on federal fraud charges.Barry Chin/Globe Staff/file Former state Representative David Nangle will plead guilty to dozens of federal fraud charges as part of a plea deal with the authorities, court documents filed Tuesday show. Prosecutors and Nangleâs defense attorneys have not come to any specific agreements about a possible sentence. A hearing in the case is scheduled for Wednesday morning.