New Mexico has announced that it will be sending more than 80 troops to the U.S. border with Mexico later this week. They will be the first of 250 Guard members expected to head to the border from New Mexico, according to Gov. Susana Martinez’s office.

The Republican governors of three states, Arizona, New Mexico and Texas, have now pledged a total of 1,600 National Guard troops, nearly half the maximum of 4,000 troops President Donald Trump requested to assist in slowing illegal immigration and smuggling.

The largest commitment is from Texas. Gov. Greg Abbott said about 300 troops will head to the border each week until the total number reaches at least 1,000.

In Arizona, 338 troops will be deployed, the state National Guard announced.

South Carolina Gov. Henry McMaster, a Republican, has also offered to send members of his state’s Guard, but there are  currently no reports of how many will be sent or when they will be deployed.

Fox News reports: The only holdout border state is California, led by Democratic Gov. Jerry Brown, who has not announced whether troops from his state’s National Guard will participate. Evan Westrup, a spokesman for Brown, told the Associated Press Monday that state officials are still reviewing Trump’s troop request.

Brown has repeatedly fought with Trump over immigration policy. Under the federal law, Trump invoked in his proclamation calling for National Guard troops, governors who send troops retain command and control over their state’s Guard members and the U.S. government picks up the cost.