"One Country, Two Systems" is a governance principle of China, allowing Hong Kong and Macau to maintain separate capitalist systems and legal structures from mainland China's socialist system, despite all being part of one China. This arrangement guarantees these regions significant autonomy except in foreign affairs and defense.
Earlier this week, the Supreme Court said U.S. Border Patrol agents could remove razor wire that the state put in place along the Rio Grande River. The Homeland Security Department is demanding immediate access to a section of the border and being blocked with razor wire and fencing. But Texas Governor Greg Abbott is doubling down, blocking the agents from entering the area and saying Texas constitutional authority is — quote — "the supreme law of the land and supersedes any federal statutes to the contrary."