Justice Stephen Breyer said that the fact the penalty would be "collected in the same manner of a tax doesn't automatically mean it's a tax, particularly since the purpose of the Anti-Injunction Act is to prevent interference with the revenue stream".

BBC: US Supreme Court hears challenge to Obama healthcare law

Just before the donors' meeting, Uganda's government produced an anti-corruption plan and agreed to reduce political interference in privatisation.

ECONOMIST: Uganda

Last year's report by the Independent Joint Anti-Corruption Monitoring and Evaluation Committee said political interference has stymied much of the Kabul Bank investigation.

NPR: Afghan Court Slaps Prison Time On Kabul Bank Execs