Not true. Newt was formally reprimanded for one ethics charge in 1997 and paid a $300,000 fine. The Republicans lost five seats in the House in the 1998 off-year Congressional elections, and Newt stepped down as Speaker of the House in part because of that debacle.
Ethics Committee Drops Last of 84 Charges Against Gingrich
Gingrich is paying $300,000 for the costs of an ethics committee investigation after admitting last year he made inaccurate statements during a lengthy probe into Democratic allegations that he misused tax-exempt donations. Gingrich denied the charges but submitted to a reprimand by the House.
An eye-opener.