Back in the late '80s, we were warned not to take nice cars, cash, or travelers checks across the Texas border from El Paso to Juarez, as the policia could not be trusted to not confiscate them on trumped up charges. I thought it was a bit paranoid myself at the time, but still heeded the advice. I'm now giving the same advice now to my Canadian friends about America.
Apple just needs to apply FOIA costs math to the situation, and inform the FBI that they can start working on the code needed as soon as the FBI gives them estimated costs of $15,564,708,001.34 The code should be available to the FBI in approximately 3 years after receipt of the cash.
Then send a hard copy of the firmware on a4 paper from a dotmatrix printer with an old ribbon.