Whoever argues that H1Bs are paid handsomely, have a look at this data disclosure for 2016 H1B wages (137 MB) from DOL. You can find all the details of companies that exploits the workers with some MS Excel wizardry.

https://www.foreignlaborcert.doleta.gov/docs/Performance_Dat...

The companies exploit a loop hole called "Pay Ranges" if you see the excel columns - WAGE_RATE_OF_PAY_FROM & WAGE_RATE_OF_PAY_TO, rather than a single absolute WAGE, the companies can legally pay any salary in that range.

That's where Mr Trump needs to "patch" the system, raise the minimum WAGE_RATE_OF_PAY_FROM.