The Three Lions goalkeeper was raised in Chino Hills, California by parents from Greater Manchester.
The 29-year-old, who left Lincoln Ladies at the end of last season, has signed a two-year deal with the club.
USA are the most successful nation in women's football. They have won the World Cup twice, the CONCACAF Gold Cup seven times and have collected Olympic gold on four occasions. They are second in the FIFA rankings, behind Germany, and lost just three of their 24 matches in 2014.
At UEFA Women's Euro 2013 England lost 3–2 to Spain in their opening game, when Bardsley scored a 94th-minute own goal, and were knocked out in the first round. Hope Powell was sacked in the wake of that failure but new coach Mark Sampson continued to select Bardsley. In May 2015 Bardsley was included in England's final squad for the 2015 FIFA Women's World Cup, hosted in Canada.
She joined Sky Blue FC of Women's Professional Soccer as a third round pick in the 2009 WPS Draft. She went on to appear in four games for the club in their inaugural 2009 season in which the club won the 2009 Women's Professional Soccer Playoffs.
A Women's International 8pm, Friday 13 February stadium:mk, MK Dons FC Tickets are priced £5 adults, £2.50 children Call 0333 200 5343 or visit MK Dons site
The 30-year-old shot-stopper took to Twitter to explain the altercation and apolgise – fair play.
By the 2011 World Cup Bardsley had taken over the national team's first choice goalkeeping position from Rachel Brown. After England's 1–1 opening group match draw with Mexico, coach Powell reported that Bardsley was "devastated" following the concession of a long-range equaliser to Mónica Ocampo. In England's quarter final exit to France, Bardsley saved the first penalty in the shootout, but misses from Claire Rafferty and Faye White sent England home.
Although born in California, Bardsley chose to represent England internationally as her parents are from Greater Manchester.
Bardsley began coaching as a volunteer coach at her alma mater, California State University, Fullerton, before being employed as an assistant coach with the University of San Diego.
In June 2012 Bardsley was named in the 18–player Great Britain squad for the 2012 London Olympics. She played in all four games as Great Britain were beaten 2–0 by Canada in the last eight.
Ayisi was sent off in the 45th minute for throwing punches at the keeper during Sunday’s 0-0 draw in Women’s Super League One.
She follows international team-mate Jill Scott to the Sky Blues.
Despite being born in Santa Monica, California, Bardsley decided to represent England due to family connections in Stockport. She appeared for the England U-19s in the 2003 UEFA Women's Under-19 Championship. She made her senior debut in the Algarve Cup in March 2005, where England beat Northern Ireland 4–0. In August 2009, she was named to coach Hope Powell's squad for UEFA Women's Euro 2009.
Manchester City’s Karen Bardsley, who has more than 40 England Women caps to her name, should really know better than this…
Tickets for the USA match are priced £5 for adults and £2.50 for children. A family ticket (two adults and two children) is available at £10 and group booking discounts apply.
In August 2011 Bardsley joined Swedish club Linköpings FC. With Linköpings Bardsley made three Damallsvenskan appearances in 2011, but none in 2012 as Sofia Lundgren remained the first choice goalkeeper.
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Bardsley will served a three-match ban for the offence.
Bardsley said: "It would be great to play for the States, but England is my family's country so I thought it would mean a lot more if I represented England.
But this was no unprovoked attack, as Ayisi first elbowed Bardsley, with the veteran keeper reacting by punching the striker in the head – not pretty scenes.
She said: "It's really exciting to be able to play a team of America's calibre.
“Whilst I was provoked, it was out of character for me to react in that way. I’ve contacted Birmingham to apologise for my involvement.”
The FIFA Futsal World Cup Colombia 2016 witnessed stunning performances by renowned names and the emergence of a new crop of talents. FIFA.com rounds up the individual award winners.
Bardsley, Karen - Manchester City (ENG)
The experienced goalkeeper lost her temper and punched opposition striker Freda Ayisi in City’s match with Birmingham City on Sunday.
The US-born player said: "I'm thrilled and ready to get started. I'm looking forward to playing my part in the club's bid to become a dedicated and competitive team that can challenge for the title."
* Senior club appearances and goals counted for the domestic league only and correct as of 23:41, 22 November 2013 (UTC).
On leaving university, Bardsley joined Ajax America Women for the 2007 WPSL season, then joined Pali Blues in February 2008 in advance of the W-League season.
And Bardsley believes these matches are the ideal way to prepare for this summer’s showpiece event.
Karen Louise Bardsley (born 14 October 1984) is an American-born English international football goalkeeper. She currently plays for Manchester City of the English FA WSL and is a member of the England women's national football team.
“It's a great test for us, to figure out where we are at the minute and with it being a first match of the season we can gauge which direction we need to progress in and where we need to work the most."
Bardsley said she had apologised to Birmingham over the incident. “Passions ran high against Birmingham. Viewing the footage again, I regret the incident with Freda Ayisi,” she said on Twitter.
She has only lived in England for three years, since signing for Manchester City, but has represented Mark Sampson’s side 40 times.
She has 34 caps for the national side after making her international debut in 2005.
“I'd been trying for years to get spotted by England and it finally all worked out."
After USA, England travel to the Cyprus Cup where they will play four matches and they have one more match, in April, before they fly to Canada for the World Cup.
Bardsley announced a transfer to Lincoln Ladies of the FA WSL in November 2012. Bardsley moved at the end of the 2013 season to Manchester City on a two-year deal. In March 2015 Bardsley was given a three-match ban for her violent conduct in a 0–0 draw with Birmingham City.
Remarkably, Ayisi was shown red and Bardsley escaped without even a booking.
England were beaten 3-0 by Germany at Wembley Stadium in November, so they will have entertained the best two nations in the world within three months of each other in the build-up to Canada 2015.
“The charge is in relation to an incident involving the Manchester City goalkeeper and Birmingham City Freda Ayisi. Ayisi was dismissed at the time for her part in the incident.”