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Democrats say that House Republicans' expected lawsuit against President Barack Obama has had one immediate effect: It has raised a lot of money for the Democratic Party.

The Democratic Congressional Campaign Committee tells NBC News that it has raised more than $2.5 million from 118,000 online donations (including 30,000 first-time donors) over a six-day period. June 25 was the day the lawsuit against Obama became news, and the DCCC raked in $588,000 on that day after aggressive email solicitations highlighting the lawsuit.

On June 30, when Obama announced he would be taking executive action on immigration, the DCCC had its best online fundraising day of the cycle, bringing in $800,000.

“Our grassroots supporters are highly motivated by this Republican Congress and are showing that with record levels of support," said DCCC chairman Steve Israel.

Republicans dismissed the Democrats' fundraising success. “If Democrats think the president’s blatant disregard for the constitution is a reason to celebrate, they’re even more out of touch than we thought,” said National Republican Congressional Committee spokeswoman Andrea Bozek.