U.S. President Barack Obama announces executive actions on U.S. immigration policy during a nationally televised address from the White House, November 20, 2014 in Washington, D.C. (Photo by Jim Bourg-Pool/Getty Images)

In celebration of President Barack Obama’s historic announcement of an immigration reform plan that will protect up to five million people from deportation, immigrants, activists, and supports will rally in front of the White House this afternoon.

But while today’s celebration is certainly warranted, it doesn’t mark the end of the fight for activists who have been working for years to improve the country’s immigration system, and some think Obama’s plan could have done more.

“Although many families will benefit, many more will not,” added Claudia Lucero, President of the National Alliance of Latin American and Caribbean Communities said in a release. “We are particularly disappointed at the exclusion of parents of young immigrants who benefited earlier from Deferred Action for Childhood Arrivals. We had hoped the President would be responsive to the need for family unification in those cases.”

At today’s rally, which was organized in part by CASA de Maryland and Virginia, hundreds are expected to celebrate in front of the White House. The Post reports that “CASA officials have predicted that up to 100,000 people in the area will obtain a three-year reprieve from deportation next year after applying to immigration officials.” But after the celebration, CASA will begin the next steps to ensure Republicans will pass a permanent bill.

From the Post:

“We need to get ready to continue the fight,” said Torres, whose organization is one of five groups sponsoring the rally in Lafayette Square. “We have made history, but we cannot wait, because millions of people have still not gotten the help they need. We need to start pushing the Republican Party really hard to pass a bill.”