(CNSNews.com) - In several tweets on Sunday, and one on Monday, President Donald Trump accused Democrats of behaving "irrationally" and being "crazy."
"The Democrats do not want us to detain, or send back, criminal aliens! This is a brand new demand. Crazy!" Trump tweeted Monday.
"Not only area they unwilling to give dollars for the obviously needed Wall (they overrode recommendations of Border Patrol experts), but they don’t even want to take murderers into custody! What’s going on?" Trump asked.
In another tweet, Trump said, "I actually believe they want a Shutdown."
The president also suggested that Democrat leaders are preventing the rank-and-file negotiators from making a border security deal. "They are offering very little money for the desperately needed Border Wall & now, out of the blue, want a cap on convicted violent felons to be held in detention!" he tweeted.
On Sunday morning, Sen. Richard Shelby (R-Ala.), a member of the border security conference committee, said, "I think the talks are stalled right now."
Shelby told "Fox News Sunday," I will say 50/50 we get a deal. I hope and pray we do."
Shelby said a new problem arose when Democrats demanded a cap on the number of beds that U.S. Immigration and Customs Enforcement has available for violent criminals so they can be held in ICE custody and deported, rather than booked and released into the community.
Shelby said he met with President Trump on Thursday, and the president "gave us some latitude" when it comes to border wall money. Trump wants $5.7 billion, but Shelby and other Republicans have indicated that he would settle for something less.
"We haven't reached a number on the barrier yet," Shelby said, "but we're working and we're hoping we can get there. But we've got to get fluid again. We got to start movement."
A short time later, Sen. Lindsey Graham (R-S.C.) told Fox News's "Sunday Morning Futures" that Trump may accept fewer dollars for his wall, but he will never accept a reduction in the number of beds for violent offenders.
"So if the Democrats' goal is to reduce the number of bed spaces available for violent criminals -- that would incentivize illegal immigration and undercut anything you did on the wall. So I don't see how he (signs) that bill."
Graham recommended that Trump sign another continuing resolution to keep the government fully operating while negotiations continue.
"I'm not asking him to shut the government down, but a continuing resolution to keep negotiating, because, at the end of the day, the president has pledged not only to build a wall, but to stop the flow of violence coming across the border."
Some government agencies will run out of money on Friday, if negotiators can't get the job done.
White House Chief of Staff Mick Mulvaney told "Fox News Sunday" that the government shutdown option "is technically still on the table. We do not want it to come to that, but that option is still open to the president and will remain so."