They sued Trump. Then they walked 230 miles for their day in court

Eliana Fernández (holding banner, second from left) and other demonstrators are on a 230-mile march from New York to Washington. Their journey will end Tuesday at the Supreme Court.

(CNN)Eliana Fernández has blisters on her feet and her legs ache. She walked for more than two weeks and trekked 230 miles to get here.

Her destination: the US Supreme Court, where justices heard arguments Tuesday that could decide her fate and shape the lives of hundreds of thousands of people across the United States.
Fernández, 31, is one of the plaintiffs suing the government over the Trump administration's decision to end Deferred Action for Childhood Arrivals, or DACA. The Obama-era program provides deportation protection and work permits to around 700,000 young undocumented immigrants brought to the United States as children.
DACA recipients Carolina Fung Feng, Martin Batalla Vidal and Eliana Fernández pose for a photo before entering the U.S. Supreme Court on Tuesday, November 12, 2019.
    So far, a series of lower court orders have blocked the administration's efforts to terminate DACA, giving those who benefit a reprieve but also leaving their lives in a fragile limbo.
    Now, after years of uncertainty and political stalemates, this could be the make-or-break moment for many so-called Dreamers and the program that protects them. If justices uphold the administration's decision to end the program, those who were shielded by DACA for years could lose their work permits and become vulnerable to deportation.
    "I hope they rule on the right side of history," Fernández told reporters after arguments concluded Tuesday.
    There are far easier ways to get from New York to Washington. But Fernández says she walked -- and spoke out as much as she could along the way -- to make sure Supreme Court justices and members of the public know how much this matters.