Each Congress proposes thousands of bills, but only 200-300 usually make it into law. These individual laws are published as public laws by number, such as Public Law 105-89. (The 105 designates the 105th Congress; the 89 denotes that it is the 89th law passed by the 105th Congress).
A compilation of public laws is put together by subject to give us the current U.S. law. This compilation is called the U.S. Code. Since many of these laws are frequently amendments of an original law, you will want to use the U.S. Code to find the current law. The policy you select should be the current law.
Keep in mind that the older the policy, the more likely that the policy will have amendments as well as research, legislative and public resources and commentary.
