A vote was unanimous in favor of the ordinance during a special meeting Wednesday night.
The city is latest among local communities who have passed or are considering similar laws. However, there are questions about how effective these new laws are.
Late last month, federal agents were checking out a car parked on in the lot of an Aurora public school when activists questioned them. Ruben Morales says the agents then started beating him and took him into custody.
"They didn't even tell me I was being arrested or anything," Morales said. "They just threw me in handcuffs."
The school district has since passed it's own ordinance banning agents from being on their property without a warrant.
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The agents also arrested fellow activist Jessi Olazaba, and in the process, she hit her head on the concrete and needed medical treatment. Activists and Aurora Mayor John Laesch showed up at the hospital, where they confronted agents.
Laesch is now supporting a proposed city ordinance banning agents from using city property without a warrant.
"This creates that opportunity for us to all do a little bit more in a very challenging and frustrating situation, where ICE is operating outside the boundaries of the law, violating people's constitutional rights," Laesch said.
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The Aurora City Council debated the proposed ordinance at a special meeting Wednesday night. They join numerous other communities, including Chicago, that have passed similar ordinances in the last few weeks.
However, legal experts question how effective these laws are when the federal agents are protected by the U.S. constitution.
"The supremacy clause. The feds really can do what they want and can trump state law," ABC7 Chief Legal Analyst Gil Soffer said. "But states have their rights as well and it is a very gray area and highly debated."
Ultimately, those debates will have to be settled in court. So far, none of the local ordinances have been tested in court to determine whether they are constitutional.