You can’t have a right to that which someone else must provide. This is called the principle of “duh.”
Here is a thought experiment: You have four children and three apples. You would like for everyone to have his own apple. You go to Congress, and you successfully persuade the House and the Senate to endorse a joint resolution declaring that everyone has a right to an apple of his own. A ticker-tape parade is held in your honor, and you share your story with Oprah, after which you are invited to address the United Nations, which passes the International Convention on the Rights of These Four Kids in Particular to an Individual Apple Each. You are visited by the souls of Mohandas Gandhi and Mother Teresa, who beam down approvingly from a joint Hindu-Catholic cloud in Heaven.
Question: How many apples do you have?
You have three apples, dummy. Three. You have four children. Each of those children has a congressionally endorsed, U.N.-approved, saint-ratified right to an apple of his own. But here’s the thing: You have three apples and four children.
Nothing has changed. Declaring a right in a scarce good is meaningless.