Home prices increase 1.3 pct. in May from April

Home prices rose in May for the second straight month as federal tax incentives pulled more buyers into the market.

The Standard & Poor's/Case-Shiller 20-city home price index released Tuesday posted a 1.3 percent increase in May from April.

Nineteen of 20 cities showed price gains month over month. Only Las Vegas recorded a price decline.

The gains underscore the …