Interior Secretary Sally Jewell will be in Phoenix on Wednesday to talk about energy development on tribal lands.

Jewell will be joined at a press conference at the Heard Museum by other federal and tribal officials.

American Indian leaders have said federal and tribal politics and bureaucracy have made energy development difficult in Indian Country. They've urged the federal government to streamline permitting processes, expand leasing reform and create an Indian energy self-determination law.

Experts say tribal lands make up about 5 percent of the land mass in the United States but contain as much as one-fifth of the nation's energy resources.

Jewell said the federal government wants to work more collaboratively and effectively with tribes to advance economic and social priorities.