National law is a set of laws that are specific to one nation (state). These laws usually come from decisions made by judges or from case law. They can also be from national statutes and constitutions. In the United States, Congress enacts national law, which requires acceptance by the president to become valid.
International law, on the other hand, deals with international agreements that can be enforceable in all countries involved with the treaty. Likewise, federal laws are bills that have passed both houses of Congress and been signed by the president.
There are a few differences between international law and national law:
The first major difference is that international law primarily focuses on conventions and treaties, while national law includes acts and constitutions within a single country. This makes it easier for the creator of international law rules to enforce their rule in any country they choose, whereas Congress is limited to making laws within the borders of its own nation.
Second, international law can impact national law in several ways:
It can affect national courts’ interpretations of national laws; it can be used as a basis for establishing human rights claims; and it can be incorporated into national law, which can then be used as the minimum standard of protection against violations of international or regional human rights law.
National law can also include legislation that prohibits discrimination based on disability. In some cases, these laws may prohibit all discrimination as a goal or they can address the positive duty of the State and the community to ensure that all people with disabilities have equal access to society. In other cases, these laws may provide for specific forms of protection against discrimination that differ from state to state.