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you look at the pential greatest harm, violent crime, what's the most impact when it comes to financial crime. given the limited resources we have, on those termgszs, that's how we decide to deploy our resources. >> as someone who comes from a law enforcement background, i know that i was task with enforcing the laws that were on the books if there was something wrong with the law or we found there was an issue, we went to our legislative branch to deal with those. i would ask that you would that, you would give us that opportunity. because if they're on the books, the american people expect for us to enforce them. you not agree with that? >> sz as i said, we enforce the laws. we take into accountthe impact -- >> do you agree the american people expect us to enforce the laws we have on our books? >> sure. and we do. >> the other thing is, with the final end to e chapter of bin laden and he's now deceased -- and i commend everyone involved with his capture and ultimate demise -- my question to you is, last year you reauthorized the investation of cia operatives ingitmo. even after they w

it's also sweeping pentially toxic chemicals into the environment. "newshour" correspondent tom bearden reports from southern louisiana. >> reporter: an enormous quantity of water is roaring through the bonnet carre spillway west of new orleans. it's being diverted from the main channel of the mississippi river, and surging toward lake ponchartrain. the army corps of engineers opened the floodgates on may 9 to lower the level of the flood- swollen river and take pressure off the levees that protect new orleans. but some people are worried about what's in all that the water-- higlevels of nitrogen fertilizer, pesticides from flooded fields further north and sediment. and how it all might affect the environment. we went along with hydrologist dennis demcheck and his u.s. geological survey team on one of their trips out onto the busy 24 mile long causeway that bisects lake ponchatrain. they're taking water samples to test for things like pesticides and petrochemicals. they're also looking for the level of salt in the water. >> the salinity is 1.5. norma