A nation's Border Controls are an uncancellable policy that dictates how strictly the nation's border security is about letting people into the country and how likely the nation is to approve applicants for legal immigration. The more highly controlled the nation's borders are, the happier the Patriots are and the less Immigration or Terrorism will occur. However, Liberals criticize heavily closed off borders. In addition, any border controls over 20% make it less likely for the nation to experience a Tourism Boom.