Story highlights The South Carolina governor urged Americans to ignore "the siren call of the angriest voices"

Haley, 43, is the first Indian-American woman to be elected governor of state in the Deep South

She had previously called Trump an "embarrassment" to the Republican Party

(CNN) The Republican Party tapped South Carolina Gov. Nikki Haley to deliver its response to President Barack Obama's State of the Union address Tuesday night, but her most memorable jabs landed squarely on the GOP's own Donald Trump. That's something that didn't escape -- or please -- some conservatives.

Haley took clear aim at the GOP front-runner, discussing her family's immigrant experience while warning against rhetoric that would threaten "the dream that is America" for others.

"During anxious times, it can be tempting to follow the siren call of the angriest voices," Haley said from the governor's residence in Columbia. "We must resist that temptation. No one who is willing to work hard, abide by our laws, and love our traditions should ever feel unwelcome in this country."

Haley never mentioned Trump by name, but the implication was clear. The billionaire, who has led the Republican race in most national polls for months, said after the Paris terror attacks he would consider creating a national database of American Muslims and later called for a temporary halt to Muslims entering the United States.

Speaking to reporters in South Carolina a day after Trump proposed the ban, Haley dismissed it as "unconstitutional" and "an embarrassment" to the GOP.

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