* U.S. should plan for more fiscal stimulus-Obama adviser
* Credit card delinquency soars, adding to worry over debt
* Indexes down: Dow 1.0 pct; S&P 0.9 pct; Nasdaq 1.0 pct
* For up-to-the-minute market news click [
] (Updates prices, adds AmEx, Intel shares, context)By Rodrigo Campos
NEW YORK, July 7 (Reuters) - U.S. stocks fell on Tuesday as investors turned cautious ahead of earnings season, and talk of a second stimulus package underscored worries about the U.S. economic recovery.
Signaling the economy's difficulty in rebounding from a deep recession, a member of the Obama administration's economic advisory panel said the United States should plan to possibly provide a second round of stimulus funds to prop up the economy. For details, see [
]"Talk of a new stimulus plan is actually a confidence killer," said Joseph Battipaglia, market strategist at Stifel Nicolaus in Yardley, Pennsylvania. "That would mean we've added a trillion dollars to debt without anything to show for it."
Investor concerns over mounting debt was also underpinned by a report showing cash-strapped consumers fell behind on their credit card bills in record numbers in the first quarter. [
]Shares of credit card company American Express Co <AXP.N> shed 1.7 percent at $23.11 and the S&P Consumer Finance index <.GSPCFI> fell more than 3 percent.
In the broader market energy stocks were among the biggest drags, along with other economically sensitive sectors like basic materials and industrials. Healthcare, a defensive play, was the only notable S&P sector with gains so far in the session.
The Dow Jones industrial average <
> fell 83.13 points, or 1.00 percent, to 8,241.74. The Standard & Poor's 500 Index <.SPX> lost 8.01 points, or 0.89 percent, to 890.71. The Nasdaq Composite Index < > dropped 18.24 points, or 1.02 percent, to 1,769.16.Investors also have their eyes set on the quarterly earnings season that gets underway this week, with Alcoa Inc <AA.N> set to report on Wednesday. Alcoa, a Dow component, is expected to post a third consecutive quarterly loss. For an Alcoa earnings preview, see [
]Stifel's Battipaglia said earnings are expected to disappoint. "The anticipation is that Alcoa's report will be even worse than expected," he said.
"The expectation of a speedy recovery is starting to slow because there is no evidence to support it."
The loss of confidence in the economic recovery has sent oil prices tumbling. New York crude <CLc1> fell close to 2 percent and its five-session slide has pressured energy stocks, a large sector of the S&P 500.
Oil services company Schlumberger Ltd <SLB.N> fell 2.5 percent to $50.17 while blue-chip Exxon Mobil <XOM.N> lost 1.3 percent to $67.22.
The S&P energy sector <.GSPE> index lost 1.6 percent.
On the upside, shares of chip maker Intel Corp <INTC.O> rose 1.3 percent to $16.75 after Banc of America Securities-Merrill Lynch upgraded the U.S. semiconductor industry and five stocks in the sector, including Intel, saying recent data suggested emerging signs of a turn in end demand. [
]But the PHLX semiconductor index <.SOXX> shed 0.4 percent.
The broad S&P 500 index rallied about 40 percent from 12-year lows hit in early March on expectations of a speedy economic recovery. But the rally wilted in the last month, as investors sought stronger evidence that conditions were improving. (Editing by Padraic Cassidy)