A Texas lawyer has filed a lawsuit saying Ted Cruz's status as a "natural born citizen" should be decided by the court system — and Donald Trump is loving it.

Cruz, who was born in Canada to an American and a Cuban, has been facing questions for a while now over his eligibility to hold office.

Trump tweeted, "I told you so," Saturday morning, along with another volley of tweets about unreported campaign loans to Cruz's 2012 Senate race.

Cruz failed to report large loans from Citibank and Goldman Sachs — hence Trump's tweets about Cruz siding with big banks.

This is just the latest back-and-forth in an ongoing feud between the two presidential candidates. The two also sparred over Cruz criticizing Trump for having "New York values," among other issues in Thursday night's GOP debate.