WOFFORD HEIGHTS, Calif. — Angel Gilberto Garcia-Avalos had been deported five times in just the past four years, yet each time he has managed to sneak from Mexico back into the U.S., where he ended up in more mischief: driving without a license, attempted burglary and felony weapons charges. In August, he graduated to full-fledged mayhem, sparking a fire in the Sequoia National Forest that has already cost the government $61 million and left some of the country’s most beautiful landscape scarred for years to come. Garcia, who pleaded guilty last month and faces 13 months in prison, had only...