Clad in their Illinois National Guardsmen uniforms, Axel and Andres Reyes arrived with their mother to a South Loop immigration office on Tuesday morning.

The men, 19 and 24, watched their mother, born in Mexico and in the U.S. for more than 24 years, enter the office where at least 10 people were detained by Immigration and Customs Enforcement just two weeks ago in what federal agents justified as “executable final orders of removal.” And the brothers waited.

“We fear her being detained and us not being there,” Andres Reyes said of his mother, who is seeking citizenship and is currently on a work permit. “We can’t really do anything about it or get involved in that, but we just always want to be with her.”

The Reyes brothers came to the facility as Democratic U.S. Reps. Raja Krishnamoorthi and Jonathan Jackson tried to tour the building at 2245 S. Michigan Ave., where those detained on June 4 were sent text messages summoning them for a routine immigration appointment.

The visit came as President Trump on Sunday said that he would scale up deportation efforts in Democratic-led cities.

The congressmen were at first denied entry — then let in, only to be escorted out by Chicago Police officers, whom ICE agents had requested. Both congressmen said they spoke with people inside, who were there for scheduled appointments.

Earlier on Tuesday, Brad Lander, the New York City comptroller who is also running for mayor, was arrested at an immigration courthouse in Manhattan as he tried to escort a migrant out of the building to avoid arrest. And last week, U.S. Sen. Alex Padilla, D-Calif., was forcibly removed from a Department of Homeland Security news conference.

“We made it through the double doors into the facility. We talked to an ICE officer who refused to identify himself. He was wearing a mask to obscure his identity. We asked for his name. We asked for his badge. He refused,” Krishnamoorthi said. “He then called Chicago Police to evict us from the property as trespassers. This is federally paid property. We should be able to conduct oversight here, and we’re going to insist following this visit on doing just that.”

Jackson said police officers were “gracious and kind,” and he called them “conflicted.”

“What you’re beginning to see is the officers are conflicted. He was calling the police on two members of Congress and said that we were trespassing,” Jackson said. “This is a federal contractor in the 1st District, and there’s been some really slimy and scammy things that have happened with text messages and people being picked up. We came here simply to ask.”

Krishnamoorthi said “several people” from Elgin, in his district, have received texts to show up to an ICE office. Jackson said two constituents have reached out to his office about missing family members.

Krishnamoorthi, who is a member of the House Oversight and Reform Committee, said the congressmen plan to write a letter to U.S. Dept. of Homeland Security Secretary Kristi Noem.

“We have every authority to be able to insist on inspecting premises,” Krishnamoorthi said. “So we’re going to write a letter now to, probably Kristi Noem, and basically demand that we be allowed to see what’s happening and to learn what’s actually taking place here in Congressman Jackson’s district.”

Krishnamoorthi, who is running for Dick Durbin’s seat in the U.S. Senate, said he’ll continue efforts to have Noem and other members of the Trump administration testify before the committee.

“We’re going to be moving to subpoena her [Noem],” Krishnamoorthi said.

Illinois Lt. Gov. Juliana Stratton and U.S. Rep. Robin Kelly are also seeking the Democratic Party’s nomination to run for Durbin’s Senate seat.

Axel and Andres Reyes watched their mother leave the office around 1 p.m.