Yesterday, the BEA announced Q1 GDP climbed just 0.1%. This afternoon, Wall Street is saying it's even worse. Citing weak construction spending data, several firms' GDP tracking models now show Q1 growth fell into negative territory. "Residential construction was a bright spot, rising 0.7% on the month and standing 15.2% above year-ago levels," noted Barclays' Cooper Howes. "Nonresidential construction fell 0.1%, however, and there were downward revisions to February and January. On the whole, this lowered our GDP tracking estimate three-tenths, to -0.2%." Macroeconomic Advisers, a widely cited source for GDP ... (full story)