Feds fear escalation of gang war on border

WorldNetDaily: Grenades, bombs found at border:

"[In a search of a residence in Laredo, Texas, t]he feds captured more than 30 homemade bombs, grenade components, assault weapons, silencers, machine gun assembly kits, bulletproof vests, police scanners and cash, Julie Myers, assistant secretary of U.S. Immigration and Customs Enforcement, said in a statement.
"...
"U.S. authorities have said they increasingly fear violence in Mexico will spill over into the United States.
"About 170 deaths have been attributed to the cartel battles in Nuevo Laredo, Mexico, in the past year, officials said. Nuevo Laredo is across the Rio Grande from Laredo."

If your common, garden variety drug gangs are fooling aboput with grenades and IEDs in Texas, what makes anyone think the terrorists can't do the same?

But, say some, why haven't they already if it is so easy?

My suspicion is that they realize that, unlike the Euroweinies, they know that attacks here at this time might strengthen the hand of the Bush administration. Attacks in Iraq, Afghanistan, even Europe, may demoralize the coalition and speed the time when they can hijack the new and unstable regimes in Iraq and Afghanistan. Further attacks on the US mainland can wait.