Wall Street declined as investors caught their breath following a massive, record-breaking rally a day earlier. The S&P 500 retreated from its all-time high in a broad selloff. Caterpillar ( CAT) was the biggest drag on the Dow. The construction equipment company tanked as news broke that federal agents were searching its Illinois headquarters. Agencies in the search included the IRS and Department of Commerce. Barnes & Noble ( BKS) fell after reporting a drop in net income and sales over its recent quarter. Same-store sales tumbled just over 8%, partly tied to weaker store traffic. AB InBev ( BUD) slumped after posting weaker-than-expected earnings over its fourth quarter. Sales in key market Brazil were the biggest culprit. Earnings in the region tumbled 33% over that three months.