Charles Babington, Boston, December 30, 2014

House Republican leaders rallied around one of their own, Whip Steve Scalise, on Tuesday after he said he regrets speaking 12 years ago to a white supremacist organization and condemns the views of such groups.

The supportive statements suggest party leaders think the flare-up will fade during the holidays, with a new Congress set to convene next week. Several Democrats criticized the Louisiana lawmaker but did not call for his resignation.

Scalise said that as a state legislator in 2002, he spoke to many groups about a major tax issue. ‘‘One of the many groups that I spoke to regarding this critical legislation was a group whose views I wholeheartedly condemn,’’ he said in a statement Tuesday. ‘‘It was a mistake I regret, and I emphatically oppose the divisive racial and religious views groups like these hold.’’

Republican leaders defended Scalise within minutes.

House Speaker John Boehner of Ohio said Scalise ‘‘made an error in judgment, and he was right to acknowledge it was wrong and inappropriate.’’ Boehner said Scalise ‘‘has my full confidence as our Whip.’’

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Louisiana’s Republican governor, Bobby Jindal, also defended the congressman.

Scalise acknowledged speaking at a 2002 Louisiana convention of the European-American Unity and Rights Organization, which called itself EURO. Former Ku Klux Klan leader David Duke founded the group, which the Southern Poverty Law Center has classified as a hate group.

In an interview Monday with The Times-Picayune of New Orleans and NOLA.com, Scalise said he had little staffing as a state legislator, and didn’t always know details of groups he was invited to address. ‘‘I didn’t know who all of these groups were, and I detest any kind of hate group,’’ Scalise told the newspaper.

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Louisiana Republicans say Duke, who ran unsuccessfully for governor in 1991, did not attend the 2002 EURO convention, but addressed it at one point by phone.

In his NOLA.com interview, Scalise said he knew about Duke, but indicated he didn’t recognize Duke’s connection to the group.

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Scalise, 49, ascended to his leadership post in June in the chain of events that followed then-Majority Leader Eric Cantor’s surprise defeat in a Republican primary.

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