The first female soldier to flee the U.S. military for Canada to avoid the war in Iraq has been ordered deported, a spokeswoman for the War Resisters Support Campaign said Thursday.

Michelle Robidoux said that Citizenship and Immigration Canada has ordered Kimberly Rivera to leave the country by Sept. 20.

Robidoux said Rivera is meeting with her lawyers Thursday to determine her next course of action and was unavailable to comment on the deportation order.

"We are very upset about this decision," said Robidoux. "The cases of war resisters are not being looked at properly. (Immigration Minister Jason) Kenney continues to intervene by telling immigration officers to red flag US soldiers who are applying for asylum as criminally inadmissible. We think that has tainted the whole process and the government should withdraw that directive."

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Kimberly Rivera, 30, served in Iraq as a U.S. Army private in 2006 before coming to Canada.

Robidoux said they will likely call on Kenney to grant the family humanitarian and compassionate consideration and allow them to stay.

Citizenship and Immigration Canada did not immediately return calls for comment.

Rivera, a 30-year-old Army private, served in Iraq in 2006. She said she became disillusioned with the mission. She crossed the border into Canada while on leave in February 2007, after she was ordered to serve another tour there. 

After arriving in Canada on leave, she applied for refugee status. 

She currently lives in Toronto with her husband and four children. Her two youngest children were born in Canada.

In January of 2009, Canada's Immigration and Refugee Board ordered her and her family to leave the country or face deportation. Rivera appealed that decision.

Rivera's lawyer, Alyssa Manning, has argued in Canada's federal court that her client would likely face a court martial and jail time, possibly up to five years, instead of an administrative discharge if she is deported because of her political opposition to the war.   

The War Resisters Support Campaign said two other Iraq war resisters who were deported, Robin Long and Clifford Cornell, faced year-long jail sentences upon their return.

Long was given a dishonorable discharge in 2008 and sentenced to 15 months in a military prison after pleading guilty to charges of desertion.

The lower house of Canada's Parliament passed a nonbinding motion in 2009 urging that U.S. military deserters be allowed to stay in Canada, but the Conservative government ignored the vote.

During the Vietnam War, up to 90,000 Americans won refuge in Canada, most of them to avoid the military draft. Many were given permanent residence status that led to Canadian citizenship, but the majority went home after President Jimmy Carter granted amnesty in the late 1970s.