Experts say just 26 words from a 1996 law have helped companies like Facebook, Twitter and Google grow to the size they are today. The law is known as Section 230 of the 1996 Communications Decency Act. It is facing new attention and might be changed. It protects internet companies from facing legal cases over things others place on their platforms. Under U.S. law, the companies are generally not responsible for things their users post on their websites. But last week, President Donald Trump pushed back against Section 230 with an executive order. The order says the government will reconsider protections if companies make editorial decisions about what users post.