If current trends continue, the prohibition of tobacco in the near future is not improbable. Drug users who commit physical crimes against others should be punished the same as any other criminal, but drug users who are peaceful have the right to be left alone. YES This question causes a lot of debate, even among libertarians. The problem with immigration today is that it is occurring in an environment that does not consist of purely private property. When all property is privately-owned, immigration poses no problem.
Immigrants can only enter or occupy property with the consent of the owner.
No one has the right to interfere with such a peaceful arrangement. Trespassing without the consent of the owner is a crime, and would be handled as such. This is wrong. Private citizens own their property, and it is they who should decide how it is used and who may enter. Another problem usually referred to in connection with immigration is the fact that immigrants can come to America and soon thereafter begin receiving welfare payments and other forms of government assistance, paid for by taxpayers.