Before he presented his Extreme Marshmallow Cannon at the White House on Tuesday, staffers urged 14-year-old Joe Hudy of Phoenix not to encourage President Obama.

But when the commander in chief asks to fire your science project, “You really can’t say no,” Joe said.

President Obama on Thursday recommitted his administration and, indirectly, congressional Democrats to comprehensive immigration reform by outlining what he said would be the major components of any legislation to change the nation's immigration laws.

President Barack Obama's $600 million border security plan seems to have it all: More than 1,000 agents, seven gunrunner teams, five FBI task forces and more prosecutors and immigration judges. But it doesn't include $40 million to help the already overwhelmed federal courts along the U.S.-Mexico border that will likely be inundated with additional drug and other criminal cases.

The White House will deploy 524 National Guard troops to Arizona to bolster security along the Mexican border, federal officials said.

Arizona Gov. Jan Brewer will meet Monday in Phoenix with federal officials dispatched by President Barack Obama to provide specifics for Arizona regarding his plans to tighten security along the U.S.-Mexico border.

The White House on Monday disputed a Republican senator's claim that President Barack Obama refuses to secure the Mexican border until Congress agrees to a wide-ranging overhaul of immigration laws.

WASHINGTON (AP) – Little Katherine Figueroa sat in a grand room inside a Capitol Hill building pleading through tears to members of Congress: “Please tell President Obama to stop putting parents in jail, all they want is a better life ...

President Obama hosted Gov. Jan Brewer at the White House June 3 for what Brewer termed a "very cordial discussion" on Arizona's new anti-illegal immigration law, in which Obama promised to send top White House officials to the state in advance of a new influx of border troops.

RELATED: Brewer, Obama look for upper hand on immigration

President Barack Obama will send 1,200 National Guard troops to help secure the U.S.-Mexico border, an administration official and an Arizona congresswoman said Tuesday, pre-empting Republican plans to try to force votes on such a deployment.

Senate Republicans are talking immigration reform with President Barack Obama, including plans to deploy thousands of National Guard troops and drones to tighten border security.