Lindberg, despite his political leanings, had a better grasp on the technical limitations of aviation in his time frame than Earhart did. In 1937, long-range overwater navigation had not progressed greatly since the days of sail, the successful crossing of the China Clipper two years earlier with the aid of US Navy radio beacons not withstanding.
Earhart seemed to have, at best, a sketchy understanding of the technology available to her and, when that got away from her through carelessness, they were doomed.
So what do politics have to do with flying?
Lindberg went on to work with Lockheed as a technical advisor. He shot down at least one Jap aircraft while flying a P-38 when teaching Air Force pilots in the South Pacific theater the techniques conserving gas in extreamly long flights.