The Guam government is looking into claims by a native rights group that its indigenous fishing rights are invalidated despite a new law.
This comes after a recent bill reinstated the traditional fishing rights of the Chamorro people.
But another bill largely forbids fishing by all people in the area declared to be protected.
The Department of Agriculture's deputy director, Joseph Torres says this problem is being looked into by lawmakers.
"An indigenous bill was passed restoring and redressing their rights to fish anywhere, in any waters without restriction... and there in lies the conflict the MPA's, the preserves existed prior to this law."
An amendment to address these issues is being drafted.