BALTIMORE — A judge in Baltimore expressed skepticism Wednesday about the Trump administration’s suit against all of Maryland’s federal judges over an immigration order and said he would rule by Labor Day on whether to allow the case to move forward.

“One of the things about me is I don’t have a very good poker face,” U.S. District Judge Thomas Cullen told a Justice Department lawyer arguing that the administration’s suit should not be dismissed. “You probably picked up on the fact that I have some skepticism,” Cullen said during a hearing.

Cullen concluded the two-hour hearing by telling lawyers for the Justice Department and the judges: “My hope is to issue a memorandum of opinion before Labor Day, recognizing that whatever I say will not be the last word on this matter, and this matte

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