Sen. Joni Ernst (R-Iowa) on Monday night made the claim that the Islamic State in Iraq and Syria (ISIS) has a presence in all 50 states.

Ernst, who was being considered as Donald TrumpDonald John TrumpForget the spin: Five unrefuted Mueller Report revelations Lara Trump: Merkel admitting migrants 'one of the worst things that ever happened to Germany' Financial satisfaction hits record high: survey MORE’s potential running mate, was ripping into President Obama’s and presumptive Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonForget the spin: Five unrefuted Mueller Report revelations Former senators launching effort to help Dems win rural votes Biden's announcement was a general election message, says political analyst MORE’s record on combating the terrorist group at the Republican National Convention in Cleveland. 

“This administration has called [ISIS] junior varsity adversaries, ignoring some of the best advice they were given,” Ernst said. “They represent a threat that is not limited to the Middle East and which is spreading rapidly.”

“In fact, according to the FBI, ISIS is present in all 50 states,” she added. “Terrorists from ISIS are in every one of our 50 states. They will use whatever weapons they have: guns, trucks, knives, poisons and bombs to kill innocent people.”

Earlier this year, FBI Director James Comey said his agency is investigating suspected ISIS supporters in every state.

"We have investigations of people in various stages of radicalizing in all 50 states," Comey said in February.

"This isn't a New York phenomenon or a Washington phenomenon. This is all 50 states and in ways that are very hard to see," he said.

The FBI chief said the ISIS message "resonates with troubled souls, people seeking meaning in some horribly misguided way."