The only role of the Federal government is to protect the states from invasion, pay the debts, regulate commerce.
The other things Trump mentioned are state issues and that’s exactly what he said.
Trump is winning because he’s the Alpha dog left in the race and Cruz is a little whiny Canadian dog in heat.
1. Protect the States from invasion? FAIL! in fact they facilitate it.
2. Pay the debts. FAIL! In fact they only service the interest. Repaying the debt is not possible when every dollar is borrowed into existence.
3. Regulate Commerce? Success! They have almost destroyed American commerce through insane Overregulation and hugely aided foreign commerce