“Mexico must pay for the wall and, until they do, the United States will, among other things: impound all remittance payments derived from illegal wages; increase fees on all temporary visas issued to Mexican CEOs and diplomats (and if necessary cancel them); increase fees on all border crossing cards – of which we issue about 1 million to Mexican nationals each year (a major source of visa overstays); increase fees on all NAFTA worker visas from Mexico (another major source of overstays); and increase fees at ports of entry to the United States from Mexico (Tariffs and foreign aid cuts are also options). We will not be taken advantage of anymore.”
https://web.archive.org/web/20160409064255/https://www.donaldjtrump.com/positions/immigration-reform