U.S. President Barack Obama unveils his final White House budget on Tuesday with a blueprint for fiscal year 2017 that will lay out his spending proposals for priorities from fighting Islamic State to providing for the poor. The budget for the fiscal year beginning on Oct. 1 is largely a political document and is unlikely to be passed by the Republican-controlled Congress. “That document … will be President Obama’s final vision of how he lays out the fiscal future for the country,” said Joel Friedman, vice president for federal fiscal policy at the Center on Budget and Policy Priorities.