…In the past 20 years, almost 50,000 enslaved Brazilian workers have been freed from some 2,000 work sites, from cattle ranches to charcoal plants for pig iron production. Since 2004, a national lista suja, or "dirty list," has fingered some 300 guilty companies, making it hard for them to get financing. "We are ahead on this," says Leonardo Sakamoto, president of Reporter Brasil…But activists like Sakamato also recognize that the fight is seriously undermined by Brazil's deep-seated impunity. Slaveholders can pay hefty fines and civil damages, but criminal convictions and jail time are rare…[But] Brazil is moving closer to final passage of a constitutional amendment that would hit slaveholders where it hurts them most: confiscation of their property — all of it…which Brazil's ultrapowerful farming and ranching lobby keeps finding ways to block...