America was not at war and they did nothing in the way of a rescue attempt. Pretty much just left them to die without a second thought.
Amelia was a high profile figure.
Sorry, but it was one of the largest SAR missions in history with many US sailors risking their lives in the search.
The Reason Why the Search for Amelia Earhart Was Called Off
A mission that cost them 250k a day that ultimately made the government want to make such navy searches illegal for civilian/celebrity adventurers.
Then we learn that the government knew she and Noonsn had been captured...and they did nothing.
Not only did they waste time and money. They left them with the Japanese.
Not very good PR.
1) Is that a retraction of your earlier statement that no search was made at all? "
they did nothing in the way of a rescue attempt"
2) As shown in a previous post, it's highly unlikely Earhart could have made it the 930+ miles to the Marshall Islands without fuel. Add to this, the Electra 10E cruised at 190MPH. A 930 mile flight would have taken her almost 5 hours additional flight time. Highly unlikely she'd have turned that way instead of looking for Howland. Add to this, is Earhart ended up in the Marshall Islands, she'd be a much worse pilot than anyone previously believed.
3) This still doesn't explain why the US would hide "the truth" for nearly 80 years. As shown above, looking at the Marshalls would be a waste of time since Earhart didn't have the fuel and all the radio triangulations showed she was around Howland. IF she had been captured by the Japanese, the US has a very plausible reason for not looking at the Marshalls and a very good post-WWII reason to hang a few more Japanese for war crimes. So why hide it?