It is a common theme that many migrants, particularly illegal immigrants, collect money from the US, and then send that money to other countries. Drug cartels, terrorists organizations, and countries who are known to be state sponsors of terrorism and drug trafficking, use this as a way to fund operations while flying “under the radar”.
Enacting a tax on remittances would be a positive step for two reasons. The first being this will help to crack down on funding of illegal organizations, money laundering, and US money going to countries which oppose us, helping to strengthen world and national security. The second being that it would help raise a significant amount of revenue for the US, which can go towards projects such as improved infrastructure or military/defense funding. A tax on remittances will help, thusly, to make America wealthier, as well as more safe.