The mayor, a strong supporter of immigration reform, said that current restrictions are hobbling the country in an increasingly fierce, international contest for the best-educated and most skilled workforce.
"As a result, America no longer is the inevitable crossroads for enterprise and innovation. Countries from Asia to South America now beckon with opportunity.
So the United States simply has to compete like never before for talent," he said in a speech.
Bloomberg, who before becoming mayor in 2002 built the hugely successful financial data and news company Bloomberg LP, said US visa rules are "sabotaging our own economy. I've called it national suicide -- and I think it really is.
The heart of the problem, according to Bl