Apprehensions decline; most illegal crossings occur in April and May, expert says.
Claim seeks disclosure of records related to reports of migrants' treatment in Border Patrol custody.
Federal government reports 414,000 people removed from country in fiscal year that ended in September.
Still, more than 900 child migrants apprehended in July, August in Border Patrol’s Tucson sector.
A week before primary election, Huppenthal says local schools will feel the impact of migrant influx.
Arizona senator argues placing unaccompanied migrant kids with sponsors before hearing risks them not showing up on court date.
More than 57,000 in all along border; data show increase in 'family units' caught crossing illegally in Southern Arizona.
Shelter officials bring teachers to facility housing Central American migrants.
Volunteers will no longer use Greyhound station, starting point for cross-country journeys, to help women, children.
Tea Party members withdraw support; Speaker Boehner says they'll continue to work on solutions, however.
New poll also finds two-thirds of Americans believe illegal immigration is a serious problem for the country.
Influx of Central American women, children isn't threat in and of itself but can beget other issues, she says.