(Bloomberg) -- Mexican billionaire Ricardo Salinas has posted a $25 million bond to avoid arrest in the US over an alleged debt some of his companies owe to AT&T Inc. Salinas, one of Mexico’s richest men with a fortune of $7.5 billion, according to the Bloomberg Billionaires Index, owns electronics retailer Elektra and other businesses like TV Azteca and Banco Azteca. He’s a vocal opponent of Mexican President Claudia Sheinbaum, who has repeatedly criticized him and his companies for allegedly not paying ...