The Latest: GOP lawmakers voice concern over DHS vacancies

WASHINGTON (AP) — The Latest on President Donald Trump and immigration (all times local):

1:45 p.m.

Top Republicans are expressing concern over vacancies at the Department of Homeland Security and cautioned President Donald Trump off more shake-ups after the resignation of Secretary Kirstjen Nielsen.

Sen. Susan Collins of Maine said Tuesday having participated in creating the department more than a decade ago she knows “these are vital positions.”

Iowa Republican Sen. Chuck Grassley made both a public and private plea to the White House not to dismiss career homeland security officials. He said he spoke to Chief of Staff Mick Mulvaney but would only know if Trump heard the message “if they don’t get fired.”

As Trump considers replacements at DHS, Republican John Cornyn of Texas, said he hoped the administration would work in “collaboration, consultation” with the Senate before sending nominees for confirmation.

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12:41 p.m.

President Donald Trump says he’s not looking to reinstate the much-criticized practice of separating migrant families at the border with Mexico. But he says many more migrants are streaming toward the U.S. through Mexico because the practice is no longer in place.

Says Trump: “I’m the one that stopped it.” He claims his predecessor, President Barack Obama, is the one who separated children from their families.

Trump ended the practice under pressure last year after footage of scores of migrant children housed in fenced-off cages at border facilities was broadcast widely. Trump’s allies are pressing for a harder line on immigration after he cleaned house at the Homeland Security Department.

Trump says “once you don’t have it,” meaning the family separation policy, “that’s why you see many more people coming.”