Good morning.

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Today, we’re trying something a little different.

The Times investigative reporter Ian Urbina wrote about new efforts to curb the use of lead ammunition by hunters. Unsurprisingly, California has been out front on the issue, with a statewide ban going into effect next July, so I asked him to tell us a little more about the story. We also have coverage of chaos at the border below.

Say I’m a Californian who doesn’t hunt and doesn’t eat game meat. Should the use of lead in ammunition worry me?

Yes, if only because you care about the environment and wildlife. Lead exposure is the leading cause of death among California condors and a major threat to bald eagles, ravens and other raptors, for example. By 1982, the number of California condors in the wild had dwindled to 22 — an entire species nearly wiped out partly as a result from this type of poisoning. Thanks largely to captive breeding programs, their numbers have rebounded.