The Wall

Dear Mr. President,
I don't think the wall that you plan on building between the US and Mexico to stop illegal immigrants will work. Just like when the Berlin wall was built, people from East Germany could find other ways to get across. They just climbed over the wall so guards were placed on towers to shoot anyone passing over the wall. I hope that American soldiers aren't going to shoot Mexican citizens. In Berlin, people found a way to get through: they just dug tunnels. In modern times, with the advancement in technology there now is equipment that can quickly dig very long tunnels. It is easy to imagine that a new type of business will appear in Mexico: many people will start digging tunnels to the US and sell tickets to pass through the border. Therefore, I think that the wall will not be effective and the money spent on this wall should be spent on something useful.