It is very similar but works differently. Also the two programs do not have the same intent.
The US has a Compact of Free Assocation (COFA) with the Marshall Islands, which provides a lot of the funds for this. Versus Alaska where it is paid for by natural resource extraction. All that said, it is the government of the Marshall Islands making the decision to pay it out this way.
From the US point of view, this is a good program because it incentivizes people from the Marshall Islands to stay put rather than emigrate to the US mainland (which they have a right to do under the COFA).