Former President Donald Trump declined to rule out abusing power if he returns to the White House after Fox News Channel host Sean Hannity asked him Tuesday to respond to growing Democratic criticism of his rhetoric.

The GOP presidential front-runner has talked about targeting his rivals — referring to them as “vermin” — and vowed to seek retribution if he wins a second term for what he argues are politically motivated prosecutions against him. As Trump has dominated the Republican presidential primary, President Joe Biden has stepped up his own warnings, contending Trump is “ determined to destroy American democracy.”

“Under no circumstances, you are promising America tonight, you would never abuse power as retribution against anybody?” Hannity asked Trump in the interview taped in Davenport, Iowa.