Sounds like the U.S. Government needs to hire some competent lawyers.
Lucrative Gulf of Mexico drilling loophole survives challenge in U.S. House
On a mostly party-line vote, The House Friday night rejected a Democratic amendment that would have corrected a 1995 mistake in drilling rules [sic] that allowed oil and gas companies to drill in portions of the Gulf of Mexico without paying royalties.
The amendment would have saved $1.5 billion in 2011, and $53 billion over the next 25 years, according to the measure’s Democratic sponsors. The windfall is a result of a mistake made by the Clinton administration’s oil and gas regulators in 1995, which Congress has been unwilling to change, despite several attempts over the 16 years.
I hate to nit-pick, but the mistake was not made in “drilling rules”, but in the oil and gas lease form that was written by government attorneys, subject to competitive bid in two lease sales back in the 1990s.