Answer:
It affects federal and state governments today because it assures us of our civil rights and freedom, which are the freedom of speech, press, and religion.
Step-by-step explanation:
It regulates the laws and actions of both federal and state governments, specifically through the Supreme Court, which can rule whether the other branches are acting unconstitutionally. The Bill of Rights also limits state power, because its rights and freedoms must be applied equally in each state.