• Cost: $1.2 billion

• Number of soldiers: Up to 6,000 at a time, with more than 30,000 participating over the two-year mission along U.S.-Mexico border.

The National Guard helped the Border Patrol

• Make 186,814 apprehensions of illegal immigrants (11.7 percent of all apprehensions made during this time on U.S.-Mexico border).

• Seize 316,364 pounds of marijuana (9.4 percent of marijuana seized during this time on U.S.-Mexico border).

Operation Phalanx (July 2010-present)

• Cost: $145 million through September.

• Number of soldiers: Up to 1,200 along U.S.-Mexico border.

The National Guard helped the Border Patrol

• Make 17,887 apprehensions of illegal immigrants (5.9 percent of all apprehensions made during this time on U.S.-Mexico border).

• Seize 56,342 pounds of marijuana (2.6 percent of marijuana seized during this time on U.S.-Mexico border).