Complex sentence: The non-partisan Congressional Budget Office provides extensive analysis of the budget and its economic effects, and has reported that the U.S. is facing a series of long-term budgetary challenges, as the country ages and healthcare costs continue growing faster than the economy.
Split into simpler sentences: The non-partisan Congressional Budget Office provides extensive analysis of the budget and its economic effects. It has reported that the U.S. is facing a series of long-term budgetary challenges, as the country ages and healthcare costs continue growing faster than the economy.