Lawyers challenging Arizona's denial of driver's licenses to young immigrants who avoided deportation under an Obama administration policy say Gov. Jan Brewer had discriminatory intent when she crafted the policy.

Immigrant rights advocates for the so-called Dreamers filed a lengthy motion for a summary judgment Wednesday in U.S. District Court in Phoenix and are seeking an oral argument in the case.

They say in court filings that the governor's policy decision reflects an intention to target non-citizens on their immigration status and a rejection of their federally authorized presence. They pointed out that Brewer had referred to the Obama administration policy as "backdoor amnesty" and political pandering.

In separate filings, the governor's lawyers say her August 2012 policy change was necessary for ensuring that state agencies adhere to the intent of state laws denying public benefits to immigrants living in the country illegally.

The Obama administration in June 2012 took administrative steps to shield thousands of immigrants from deportation. Applicants must have come to the United States before they turned 16, be younger than 30, have been in the country for at least five continuous years, be in school or have graduated from high school or GED program, or have served in the military. They also were allowed to apply for a two-year renewable work permit.