Arizona Cardinals first female coach Jen Welter praised by US Vice President Joe Biden The 37-year-old, who spent 14 years as a minor league gridiron pro, joins the squad as an intern for the pre-season Youtube Jen Welter: First female NFL coach The NFL's first female coach has been praised by those right at the top of American society. Former player Jen Welter has told of her delight at landing the historic role with Arizona Cardinals. The 37-year-old, who spent 14 years as a minor league gridiron pro, joins the squad as an intern for the pre-season. She will take the field training some of the hardest-hitting players in the NFL. She tweeted: “I am honoured to be a part of this amazing team.” Even US Vice President Joe Biden hailed the move. He tweeted: “Breaking barriers and reaching new heights. Congratulations to Jen Welter. This is what progress looks like.” Cardinals head coach Bruce Arians took the unprecedented decision to hire the first woman coach in the NFL’s 95-year history. He said he had spoken to his squad about Jen and insisted “they were all very cool” with his new appointment. He added: “Coaching is nothing more than teaching. One thing I have learned from players is, ‘How are you going to make me better? "If you can make me better, I don’t care if you’re the Green Hornet, man, I’ll listen.’ "I really believe she’ll have a great opportunity with this internship through training camp to open some doors for her.It’s not going to be a distraction in any way.” Darren Urban, a senior writer for azcardinals.com, said: “Even though it’s a boy’s club, they’re not going to care if it’s a woman or a man as long as that person is getting them better. “Somebody’s got to be first, somebody’s got to at least crack the door open a little bit and even though this is just an internship. “Hopefully down the road, more doors will be open.” Jen, who was a running back in a minor professional team in her playing days, landed the role of coach at Texas Revolution in the Indoor Football League in 2014. She was also the first woman to hold a non-kicking position in a men’s professional sports league. Texas Revolution / JenWelter.com Boss lady: Jennifer Welter is the first female NFL coach, and has been appointed by the Arizona Cardinals Jen has a master’s degree in sports psychology and a PhD in psychology. America is leading the way with women coaches in top flight sport, putting UK football and rugby to shame. Last season, Becky Hammon, an assistant coach for basketball’s San Antonio Spurs, served as head coach for the team’s developmental summer league team and led them to a championship earlier this month. The NFL will also witness another breakthrough for women in the upcoming season, when Sarah Thomas takes the field as a full-time game official. The season begins on September 10. The Cardinals play their first game, against New Orleans Saints, three days later.