There is no point talking sense to you. In your mind "Mexico" is a soverign country. In the mind of a Trump supporter Mexico is a bad place with bad people who are coming across our southern border and if they don't they could end up in jail in Mexico which is 100 times worse than a good jail in USA.
They may not actually be sending their rapists, but some who come here do commit rape, so technically it is true if you don't think about it too much.
Next?
No, you see, this important. Mexico is NOT sending their rapists or anybody. He said they were. This is just one hundreds of things he says that are wrong or lies. If you cannot understand this simple example......well I can understand why you like Trump.