The main purpose of this legislation, known as "The Allegiance Act of 2025," is to reinforce the prominence of the United States flag on Capitol Hill. It aims to prohibit the display of flags from other countries in the Capitol area and to prevent Members of Congress from using official funds to buy flags of other nations. The key provisions of this law include two main prohibitions. First, it explicitly bans the display of any foreign flag on the grounds of the U.S. Capitol. This means that only the U.S. flag can be shown in that area.