The man identified as Brian D. Dutcher from Wisconsin allegedly told a security guard at a La Crosse library, "the usurper is here and if I get a chance I'll take him out and I'll take the shot," referring to Obama," CNN reported.
President Obama recently went to Wisconsin to promote his proposal for overtime pay reform.
According to reports, Dutcher confirmed his statement while being interrogated by Secret Service officials.
The warrant also says Dutcher posted on Facebook on June 30 "that's it! Thursday I will be in La Crosse. Hopefully I will get a clear shot at the pretend president. Killing him is our CONSTITUTIONAL DUTY!"
Dutcher also told a La Crosse detective that his threat was serious and that "he would not have said what he said if he didn't intend to carry it out."