Former US Rep. Mike Gallegher (R-WI) was hired last week by the software company Palantir Technologies, after departing Congress earlier this year. In an op-ed published by The Washington Post Tuesday, columnist David Ignatious, who recently interviewed the former GOP lawmaker, explains why Gallagher’s exit is “a case study in what’s broken in national politics — and maybe how to fix it.” Although “very conservative,” Ignatious notes that Gallagher “fears that conservative values aren’t the defining point for Republicans any longer.” READ MORE: ‘Fiery’ closed-door meeting highlights bitter inf…