Feb. 4 (Bloomberg) -- Richard Clarida, global strategic advisor at Pacific Investment Management Co., and Tom Porcelli, a senior economist at RBC Capital Markets Corp., talk about the outlook for U.S. economy. Clarida and Porcelli also discuss the U.S. labor market. The jobless rate unexpectedly fell in January to the lowest level in 21 months, while payroll growth was depressed by winter storms. Clarida and Porcelli speak with Tom Keene on Bloomberg Television's "Surveillance Midday." (Source: Bloomberg)