About That Pardon Power ...

Many of the same people who are (correctly) pointing out that US president Donald Trump was constitutionally empowered to pardon terror kingpin Joe Arpaio continue to whine about "Deferred Action for Childhood Arrivals," former US president Barack Obama's reprieve of punishment (deportation) for immigrants who came to the US as children with parents who didn't get the (unconstitutionally) required permission slip.

So, recap:

The President shall be Commander in Chief of the Army and Navy of the United States, and of the Militia of the several States, when called into the actual Service of the United States; he may require the Opinion, in writing, of the principal Officer in each of the executive Departments, upon any Subject relating to the Duties of their respective Offices, and he shall have Power to grant Reprieves and Pardons for Offences against the United States, except in Cases of Impeachment. -- Article II, Section 2, US Constitution (emphasis mine)

Any questions?