...The bulk of BAC's business activities are conducted within the U.S., which carries a Fitch rating of `AAA'/Stable. Nearly 90% of assets and approximately 94% of net income are earned in the U.S., its most profitable region as measured by ROA. Outside the U.S., the economies in which BAC operates are relatively stable, predominately within developed markets in Europe. Incorporated in our rating outlook is slower economic growth over the near term relative to 2018....