The Obama administration will kick off one of the most sweeping changes in immigration policy in decades Wednesday, allowing an estimated 1.7 million young undocumented immigrants to apply for the temporary right to live and work openly in the United States without fear of deportation, The Washington Post reports.

Immigrants have waited for final details of the plan in the two months since US President Obama pledged to brush aside years of congressional stalemate over the Dream Act and grant de facto residency to qualified immigrants who were brought to the country as children.

The program is open to immigrants aged 15 to 31 who came to the country before they were 16 and have lived there continuously for at least the past five years. Among other restrictions, they must be free of serious criminal convictions, be enrolled in or have completed high school, or have served in the U.S. military. On Tuesday, officials confirmed that those enrolled in GED programs and certain training programs will also qualify, broadening the program’s potential reach.

U.S. Citizenship and Immigration Services also provided a list of documents it will accept as proof of continuous residency, including tax receipts, bank records, and church confirmation and other religious records.