Hillary Clinton is trouncing Donald Trump among Latinos, Asian Americans and pro-immigration groups, but that doesn't mean they're overly optimistic that Clinton can actually deliver immigration reform.

"If there's one thing we learned from the Obama presidency is that promises can be quickly and easily broken, so there's a sense of cynicism," the Center for Community Change Action's Kica Matos admitted about President Obama. "He completely failed us in 2008 and he failed us in 2012," which is making immigration-focused voters wonder if Clinton is "pandering to the Latino community."

Matos' group is part of a campaign called the Fair Immigration Reform Movement, which aims to mobilize 1 million Latino voters in Colorado, Florida and Nevada against Trump by Election Day.

That coalition will do "everything we possibly can" to make sure Clinton does not abandon her commitment to overhaul the nation's immigration laws, allow a pathway to citizenship for the 11 million undocumented immigrants living in the U.S., and grant administrative relief to some immigrants if she wins in November, Matos said.

Some believe Clinton's lead in the polls among pro-immigration voters has much more to do with Trump's bombastic statements about immigrants, and aren't based on the belief that Clinton would actually deliver them a real policy result.

"In general what you're seeing is tepid support for Clinton from the people who are most enthusiastic about" allowing undocumented immigrants to become citizens, said Ira Mehlman, spokesman for the Federation for American Immigration Reform, which opposes amnesty.

It's easy to understand the flight from Trump. The candidate has pledged to deport undocumented immigrants and build a wall along the Mexican border, which drove Matos' organization to launch a political arm for the first time in its history so that it can explicitly electioneer for or against specific candidates.

And while some think they see cracks in Trump's immigration platform, the candidate said Tuesday on Fox that he wasn't looking to dodge his pledge to build a wall across the southwestern U.S. border. "100 percent," he said on Fox when asked if the wall would really be built.

Trump has said there could be a "softening" of his position, but he also stressed that he wants to "follow the laws," a sign he still wants to deport many of the illegal immigrants who are still in the U.S.

"Donald Trump has emboldened white supremacists and xenophobes in a way that I have never seen since coming to this country" in 1998, Matos said. Her organization is knocking on doors to inform community members about the candidates' positions, she said. Volunteers are explaining how it is even more important to vote this year "because their vote will make all the difference in the world in terms of the future that they and their families face," she said.

In the most recent Pew Research Center survey of Hispanic voters, Clinton led Trump 66 percent to 24 percent. Among Asian Americans, the country's fastest-growing demographic, only 19 percent viewed Trump favorably, versus 62 percent who like Clinton and 68 percent who like Obama.

Still, that support isn't translating into faith in a new President Clinton, even though she has promised a comprehensive immigration bill after her first 100 days.

"This is not enough," United We Dream, which represents immigrant youths, posted on its Facebook page about Clinton's promise. "Relief for our communities cannot wait. Hillary Clinton would have the power to protect millions of undocumented immigrants in her first day in office by using her executive authority."

"Let's push Hillary Clinton to do more than introducing a comprehensive immigration reform bill," the group said.

Tom Miller, an author who frequently writes about border issues, added that Clinton's previous support for border control measures, including fence building, should give immigrant voters pause.

"On the surface, there are important differences between Clinton's and Trump's immigration platforms," he wrote Tuesday in a post on TomDispatch.com, a publication of the liberal Nation Institute. "Trump's wildly xenophobic comments and declarations are well known, and Clinton claims that she will, among other things, fight for family unity for those forcibly separated by deportation and enact 'humane' immigration enforcement.

"Yet deep down, the policies of the two candidates are far more similar than they might at first appear," he stated.

Although few will publicly admit it, many pro-immigration leaders see the Clinton-Trump matchup as a contest between two less-than-ideal choices. Perhaps sensing that, Clinton has aggressively courted Latino and Asian voters, who view her running mate, former Virginia Gov. and Sen. Tim Kaine, as the better half of the ticket.

Tapping Kaine as her running mate was a nod to those who question her sincerity on the topic, said one knowledgeable advocate who did want to be named. Many of the groups are more comfortable talking down Trump than talking up Clinton on the issue, the source said.

The Clinton campaign did not respond to a request for comment.