First: Source?
Second: Hillary Clinton is the junior senator from NY, and cannot ban anything on her own accord. She can try to get legislation through by convincing the majority of the Senate to go along with it, but by herself she can't ban squat.
Third: Lead is a widely-used substance that's too common in too many products to "ban". Your claim is a little too general and gives no specific information about what she wants to ban, and what the scope of the ban would be. Saying that "Hillary wants to ban LEAD" is about as informative as saying that Elizabeth Dole wants to ban oxygen. What is she trying to do?
Please research these claims before posting them here. This is not a clearinghouse for unsubstantiated Internet rumors or urban legends, and our image as gun owners suffers if we don't appear reasonably informed.