The war of words between President Trump and California Governor Jerry Brown over illegal immigration heated up again this morning. Just yesterday Gov. Brown suggested 400 National Guard troops would be headed for the border and that the federal government had agreed to pay for it. But this morning President Trump tweeted this:

This all started a couple weeks ago when President Trump announced that, since funding for his border wall was stalled, he was calling on states to send National Guard troops to the border. A week later, there was another surprise when Gov. Jerry Brown announced that he would be sending 400 National Guard troops to the border to fight smuggling and drug trafficking. However, Brown also drew a line at getting involved in preventing illegal immigration saying, “It will not be a mission to round up women and children or detain people escaping violence and seeking a better life. And the California National Guard will not be enforcing federal immigration laws.”

That made it a bit unclear what California’s troops were actually going to do. National Guard troops are not allowed to arrest people at the border. That’s the job of Customs and Border Protection (CBP) officers. Troops from other states were using surveillance equipment and notifying the border patrol if they saw someone trying to cross the border. They were also given jobs doing paperwork and other support roles aimed at freeing up more border patrol officers. But earlier this week the Associated Press reported that California was rejecting most of the actual jobs the border patrol wanted the troops to do.

The state informed federal officials it will not allow its troops to fix and repair vehicles, operate remotely-controlled surveillance cameras to report suspicious activity to the Border Patrol, operate radios and provide “mission support,” which can include clerical work, buying gas and handling payroll, according to officials with knowledge of the talks who spoke condition of anonymity because they were not authorized to discuss the matter.

The next day, California officials said they were not backing away from sending troops to the border even as a CBP Deputy Commissioner confirmed the core of the Associated Press report, i.e. Gov. Brown would not let his troops do a number of support jobs for the border patrol.

Wednesday, Gov. Brown released a statement saying 400 troops were headed to the border, “after securing the federal government’s commitment this week to fund the mission.” That certainly makes it sound as if some agreement has been reached. But if so, Trump’s tweet this morning appears to be rejecting that agreement. So far, there has not been a response from Gov. Brown clarifying whether or not his National Guard troops are still headed for the border.