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Sarah Palin renewed her plea for lawmakers to impeach President Obama during a Saturday speech in Colorado.

"There's only one remedy for a president who commits high crimes and misdemeanors and it's impeachment. It's the I-word," Palin said to applause at the Western Conservative Summit in Denver.

Palin first called for impeachment in a Breitbart.com op-ed 13 days ago, calling the current crisis on the southwestern border, where children from Latin America are rushing to cross over into the United States illegally, the "last straw."

Other Republican leaders have accused Obama of overreaching with his executive powers,  but don't endorse impeachment. House Speaker John Boehner (R-Ohio), for example, is pushing legislation to sue the president. Palin says that's not forceful enough.

In her roughly 30-minute speech, Palin sharply criticized Obama over immigration, Benghazi and other fronts that have brought him consistent criticism from conservatives.

Palin's calls for impeachment are reverberating on the campaign trail, ensnaring a couple of Republican candidates for U.S. Senate in recent weeks. Her comments put Republicans in a difficult position: Embrace Palin's calls, and they risk alienating moderate voters. Reject them, and they risk disappointing staunch conservatives who agree with the former Alaska governor.

Iowa state Sen. Joni Ernst (R) was forced to walk back previous comments suggesting she was open to impeachment. In Georgia, Rep. Jack Kingston (R) has drawn widespread attention for not taking a yes/no position on impeachment.

Sean Sullivan has covered national politics for The Washington Post since 2012.