DENVER (AP) — Denver Mayor Michael Hancock predicts the quick reversal of a ruling by a federal judge in Texas that temporarily blocked President Barack Obama's executive orders easing the threat of deportation for millions of immigrants.

Hancock, a Democrat, joined staff of several immigrant advocacy groups, clergy and immigrants at a news conference Tuesday urging immigrants to get their paperwork in order and get ready for reform, because "very soon and inevitably, the decision in Texas will be overturned."

The Obama administration has vowed to appeal the Texas ruling, which was handed down late Monday.

One Obama order expanded eligibility for the Deferred Action for Childhood Arrivals program first launched in 2012 by eliminating age caps and allowing immigrants who arrived as recently as 2010 to apply. The second extended protections to parents of U.S. citizens and legal permanent residents.

Both groups would be protected from deportation for three years and get work permits. The application process for the expanded Deferred Action for Childhood Arrivals was to have started Wednesday.

Obama has said he acted because Congress has failed to come up with its own immigration reforms. Several speakers at Tuesday's news conference in Denver called on Congress to act, standing before supporters with signs thanking Obama or declaring, among other slogans: "When Congress won't act, the president must."

Hancock called Obama's action a "bold and common sense step" that will allow millions of immigrants to emerge from the shadows.

Salvador Hernandez, whose group Mi Familia Vota encourages civic engagement, said immigrants should not be intimidated by the political debate and seize the opportunity to apply for the programs Obama created.

Keyla Betancurth, a 28-year-old who immigrated to the United States from Guatemala when she was 17 in search of a way out of poverty, urged other immigrants to prepare to apply, as she plans to do. She spoke at Tuesday's news conference even though she said she feared deportation. When she faltered at one point, Hancock placed a comforting hand on her back.

Betancurth's three-year-old daughter Genesis, who was born in the United States, stood at her feet with a sign saying, in Spanish, "yes we can" and referring to the changes Obama has proposed that would benefit her family.

Rep. Jared Polis, D-Colo., issued a statement Tuesday citing estimates that 90,000 immigrants in Colorado would be eligible for relief under Obama's orders. Polis called on House Republicans to "finally consider a comprehensive immigration reform package that better secures our borders, streamlines our guest worker system, and keeps families together."