I always wondered if all the national forests, etc would be used as collateral. Legal constraints notwithstanding, the current crowd would gladly ink some kind of deal to get the money.
It's not too far a stretch from Clinton's locking up the vast coal deposits in the Escalante Staircase in Utah by expanding the borders of a "national monument" to include them as a repayment to an Indonesian campaign contributor who had his own large coal holdings.
Don’t forget Dianne Feinstein who locked up the lanthanide mining in the Mojave National Preserve. This greatly benefited China, where she and husband Dick Blum have enormous financial investments.