A Mexican woman walking down the street is arrested and thrown out of the country while her 3 kids under 10 are at school. This will make good press. hypothetical.
I don't think you understand that its nearly impossible to execute his plans without destroying the US in the process.
A 45% tax on Chinese and Mexican goods at the import price will only translate into about 5% price increase at the retail price after markup. The flip side. A 45% tax on US goods entering china will reduce US GDP by at least 10% or $1.6 trillion usd over a five year period. China will find a substitute.
