Since the mid-1980s, the U.S. Border Patrol has quintupled in size — growing from about 4,000 to more than 20,000 agents.
The government has constructed some 700 miles of fencing and vehicle barriers. It has placed thousands of ground sensors, lights, radar towers and cameras along the border. And Customs and Border Protection is now flying drones and helicopters to locate smuggles and rescue stranded immigrants.
So here's the question: Is the Southwest border secure?
Rep. Tim Huelskamp, R-Kan., shown in 2010, has said he would deserve a primary challenge if he voted for House Speaker John Boehner's "fiscal cliff" proposal, which would extend the Bush-era tax cuts only on income of less than $1 million.
House Speaker John Boehner and his leadership team are urging them to support his "Plan B" to avoid the automatic tax hikes of the "fiscal cliff." But they're also facing pressure from outside groups that could mount primary challenges against them if they do.
Boehner argues his plan — which would allow the Bush-era tax cuts to stay in place for income under $1 million a year — isn't a tax increase. But a number of conservative groups have come to a very different conclusion.
The controversial drilling technique known as hydraulic fracturing has created an oil and gas boom around the country. In states like Texas, Pennsylvania and Colorado, there's been heated debate about rules that protect groundwater and public health.
California is now wading into that arena with the release of the state's first fracking regulations. The state's earthquake-prone geology, however, could bring particular concerns.
Fracking itself isn't new. The technology behind it, though, has changed.