(b)
In a case under this section, the Secretary or his designee may—
(1)
make a lump-sum award in the manner prescribed by section
8135 of this title when he or his designee considers it to be for the best interest of the United States; and
(2)
compromise and pay a claim for benefits, including a claim in which there is a dispute as to jurisdiction or other fact or a question of law.
Compensation paid under this subsection is instead of all other compensation from the United States for the same injury or death, and a payment made under this subsection is deemed compensation under this subchapter and is satisfaction of all liability of the United States in respect to the particular injury or death.