The Obama administration keeps on breaking its promises on the Iran deal — its promises to the American people, that is.

The latest betrayal: The Treasury Department just lifted key restrictions on Iran’s ability to do business in US dollars and access world financial markets — breaking Team Obama’s explicit vows as it lobbied Congress not to nix the deal.

Iran’s banks weren’t even cut off from the US financial system over the nuclear issue — but over Tehran’s funding of terrorism, its regional aggression and so on.

Which makes another Treasury move even more squalid: It will now also let foreign firms and branches of US firms do business with Iranian groups like the Revolutionary Guard.

The Guard is the chief conduit for Tehran’s support of terrorism, tied to numerous plots, including one in DC aimed at a Saudi envoy. And it’s also a prime force helping Syria’s Bashar al-Assad massacre civilians in his bloody bid to keep power.

It was behind the kidnapping of US sailors in January, the serial harassment of US Navy ships and even last month’s arrest of another Iranian-American in Iran.

Yet the Obama Treasury is making it easier for the Revolutionary Guard to do business — as part of an official US drive to boost Iran’s economy in the name of preserving the nuclear deal.

This, when a Foundation for Defense of Democracies report last week noted much of Tehran’s windfall from the deal has gone to Iran’s military, including its nuclear and missile programs and its terror operations.

At least Team Obama has only three months left to shower more gifts on Iran. But what of the next president?

Donald Trump slams the Iran deal every chance he gets. Hillary Clinton promises to be tough in “enforcing” it, but publicly backs President Obama’s signature foreign-policy achievement. If she wins, let’s all hope this is another of those issues where her real position isn’t her public one.