It is an issue that has been long needed to be dealt with for domestic, international flying and the old West Coast Hawaii turn. Lets not forget the number of time zones crossed. North/South operations need to be addressed as well.
A maximum number of takeoffs and landings to be accomplished during day and night operations need to be addressed too.
The subject of duty and rest are important matters that need to be dealt with grown ups, of which alas
, after the battle of the US budget, it has been proven that we have none in Congress
.
After all, they have more important matters to deal with
... vacations???