Marana, Ariz., is used to placid local politics, but the town, in a congressional swing district held by Juan Ciscomani, has been convulsed by two national issues, A.I. and immigration detention.

© Cassidy Araiza for The New York Times

Kassi Solberg has concerns about a proposed complex, the size of 3,800 football fields, near her home. Trust us, the developer says.

An obsession with the most doomer prospects of A.I. is blinding progressives from thinking about serious, realistic policies.

The chip maker said its profit in its most recent quarter jumped 211 percent from a year earlier thanks to extreme demand from other big technology companies.