H. R. 529 aims to extend the boundary of the United States' customs waters from the current 12 nautical miles to 24 nautical miles as measured from the baselines of the United States. This change is in line with Presidential Proclamation 7219. The bill updates sections of both the Tariff Act...
Simple Explanation
The government wants to make a bigger area of the ocean around the United States, called customs waters, where they can check for things that people are bringing into the country, like goods on ships. This area used to be 12 miles from the coast, but now they want it to be 24 miles, so they can keep it safe and make sure everything follows the rules.