Today on theDESK Gov. Scott Walker of Wisconsin joins the 2016 presidential race at a time of growing challenges for him, especially in Iowa.<br /><br />Subscribe to UPROXX for More: https://goo.gl/wWFK2D<br />Check out more of UPROXX here:<br />http://www.uproxx.com<br />https://twitter.com/uproxx<br />https://facebook.com/uproxx<br /><br />UPROXX.com tracks the best of pop culture by tapping into the film, TV, music and sports zeitgeist on the internet.
