Ever since it was founded, the union has tried to work together more to ensure they have the same laws.
There's already a European Parliament that creates new laws for all the countries.
But now there are plans to have one European President, elected by leaders of all the countries and to have the same foreign policy.
Good idea or not?
That would mean all the 15 states would agree with each other on what needed to be done if a world issue, like the Iraq war, had to be dealt with.