CHICAGO — Consuelo Martinez considers herself a devout Catholic who attends church every Sunday, but the looming threat of large-scale raids that could result in thousands of immigrants being deported has her questioning her ritual.

“Should I really go to church or not?” Martinez said in Spanish. “I don’t know what will happen until I wake up that day.”

Martinez is a community organizer in Chicago whose family includes people with varying immigration status. She’s fearful about what might happen during the planned raids from Immigration and Customs Enforcement.

“I ask you to support our immigrant communities … be present during this week where we are most at risk,” Martinez said.

Martinez is among activists across the country who for weeks have held meetings to educate immigrants about their rights and touted strategies for resistance.

The enforcement campaign comes weeks after President Donald Trump first tweeted about and then delayed the sweeps.

On Friday, Trump confirmed the raids will begin this weekend and told reporters that agents will focus on detaining people with criminal backgrounds. Trump has said such efforts will remove dangerous people from the country and deter others who are considering migration to the U.S.

When is the special enforcement campaign scheduled to take place? Reports indicate the raids could begin Sunday morning before sunrise. ICE raids typically take place between 3 and 5 a.m. because most people are home during those hours, experts said.

Where will the raids happen? News reports by The Associated Press have indicated the raids will target Atlanta, Baltimore/Washington, Chicago, Denver, Houston, Los Angeles, Miami, New Orleans, New York City and San Francisco.

Will this be a one-day action? Probably not. News agencies have reported they will continue throughout the week.

Can ICE agents raid private homes? Yes, but only if they have a warrant signed by a judge with the subject’s name and address. The agents cannot force their way into homes with a simple administrative warrant, experts say. As such, advocacy groups have encouraged people to keep their doors closed to ICE agents unless the agents slide a warrant signed by a judge under the door.

Can people be detained without a deportation order? Yes. ICE agents can ask to see immigration papers of anyone inside the home and arrest any undocumented occupants.

What about any children in the home? Children remain the greatest concern for advocacy groups. Reports have indicated that if the entire family is undocumented, family members — including children — may be housed in local hotels until ICE determines where to send them to await deportation. If the children are legal residents or U.S. citizens, the Department of Homeland Security’s current guidelines allow the deportee parent to make arrangements for suitable child care before being taken into custody. If the parent can’t find someone to take the child, the child could be turned over to the Department of Children and Family Services.

Are these raids unprecedented? This would not be the first time ICE has executed sweeping immigration raids across the country. The Obama administration ordered more than 2 million people deported, including those swept up in raids between October and November 2015, according to a Politico report. But given Trump’s anti-immigrant rhetoric, advocacy groups say they don’t know what to expect.