SIOUX CITY — U.S. Rep. Steve King, R-Iowa, in late Wednesday night tweets blasted President Donald Trump, a fellow Republican, over possible immigration policy moves.

King tweeted that Trump would blow up his base of conservative support and have no credibility, if the president takes what King considers a soft stance on immigration.

King, a firebrand conservative who has the quest to build a wall at the Mexican border as one of his top issues, was responding to an Associated Press account on a possible deal with Democrats regarding the wall or people affected by Deferred Action for Childhood Arrivals, or DACA.

By Thursday morning, the president wrote a series of tweets to try to explain where immigration pieces stand.

King on Wednesday night retweeted an AP story tweet, which cited Democratic leaders and read, “BREAKING: Schumer, Pelosi announce deal with Trump to protect young immigrants; will include border security, but no wall.” King then topped that tweet with his own take, writing, “@RealDonaldTrump If AP is correct, Trump base is blown up, destroyed, irreparable, and disillusioned beyond repair. No promise is credible.”

In another tweet a few minutes after the first one at about 10 p.m. Wednesday, King wrote, “@RealDonaldTrump Mr. President, I support your agenda, especially your no amnesty agenda. MAGA!”

King tweeted once more on the topic, with a Thursday morning tweet that still remains, in which he recounts actions he calls amnesty during past presidencies. King tweeted, “Reagan led with Amnesty, 1986. Bush 43 led with Amnesty ‘06, Obama led with Amnesty ‘13. All failed so ... Trump leads with DACA Amnesty 2017.”

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With the Deferred Action for Childhood Arrivals initiative in force since 2012, the U.S. Department of Homeland Security does not deport certain undocumented youth who came to the U.S. as children with relatives.

Trump also used Twitter to lay out his positions Thursday morning. In the first such tweet from his @realDonaldTrump account, the president wrote, “No deal was made last night on DACA. Massive border security would have to be agreed to in exchange for consent. Would be subject to vote.”

Another Trump tweet said, “The WALL, which is already under construction in the form of new renovation of old and existing fences and walls, will continue to be built.”

His fourth and final tweet on the topic Thursday morning appeared to indicate that Trump may not seek deportation of some of the undocumented young people. Trump wrote, “ ... They have been in our country for many years through no fault of their own — brought in by parents at young age. Plus BIG border security.”

Also on Thursday, White House Spokeswoman Lindsay Walters repeated the president’s assertion that “no deal” was made on protections for young immigrants during a dinner Wednesday night between the president and Democratic leaders Nancy Pelosi and Chuck Schumer.