U.S. Sen. Ed Markey, D-Massachusetts, accused Republican leaders Tuesday of playing "political games" with the futures of immigrants brought to the country as children, adding that the only "dream" President Donald Trump cares about "is his empty one of a border wall."

With Congress facing a March 5 deadline to pass a bill addressing those impacted by the Trump administration's Deferred Action for Childhood Arrivals program phase out, Markey called on lawmakers to work together on a bipartisan solution.

The Massachusetts Democrat further pushed back against Trump's assertion that Democrats "are doing nothing for DACA."

Markey, responding to Trump's Twitter claim, argued that the president repealed the program, which provided benefits to immigrants who were brought to the U.S. as a children, known as dreamers, and Republicans -- not Democrats -- keep blocking a legislative fix.

"Republicans are using dreamers for leverage, not Dems," he tweeted. "The only dream Trump seems to care about is his empty one of a border wall."

.@realDonaldTrump repealed #DACA, not Dems. @GOP keeps blocking the #DREAMAct, not Dems. Republicans are using #DREAMers for leverage, not Dems. The only dream Trump seems to care about is his empty one of a border wall. https://t.co/328UKjaaxF — Ed Markey (@SenMarkey) January 2, 2018

Markey also contended that although Congress has the votes to pass a DACA fix, Senate Republicans and Trump "want to play political games with dreamers."

He urged Republicans to "stop using our young people as leverage."

The votes are there to pass #DACA and fund #CHIP, but @SenateGOP and @realDonaldTrump want to play political games with #DREAMers and children's #healthcare. Let's pass these bills now and stop using our young people as leverage.https://t.co/C8E57Vsf4V — Ed Markey (@SenMarkey) January 2, 2018

Markey's tweets came shortly after Trump accused Democrats of being "just interested in politics" and not committed to addressing DACA.

"Democrats are doing nothing for DACA - just interested in politics. DACA activists and Hispanics will go hard against Dems, will start 'falling in love' with Republicans and their President! We are about RESULTS," the president tweeted Tuesday.

Democrats are doing nothing for DACA - just interested in politics. DACA activists and Hispanics will go hard against Dems, will start “falling in love” with Republicans and their President! We are about RESULTS. — Donald J. Trump (@realDonaldTrump) January 2, 2018

U.S. Attorney General Jeff Sessions announced in September that the Department of Homeland Security had begun an "orderly lawful wind down" of DACA due to various legal concerns.

Administration officials said at the time that no current DACA beneficiaries would be impacted before March 5, 2018 "so Congress can have time to deliver on appropriate legislative solutions."

They added that no new initial DACA-related requests or applications filed after the announcement would be acted on.

The Obama-era program has given an estimated 800,000 undocumented immigrants deferral from deportation and a work permit.

Trump, who made building a wall along the United States' southern border with Mexico a major tenet of his 2016 campaign, has reportedly called on lawmakers to include funding for the structure in any DACA deal.

The Republican tweeted last week that "there can be no DACA without the desperately needed wall at the southern border and an end to the horrible chain migration and ridiculous lottery system of immigration."