The GOP's surprise vice-presidential nominee brings a fresh face to the '08 race.
Readers write about windfall-profit taxes on oil companies.
Depending on their own point of view, they give thumbs up – or down – to Obama's and McCain's energy proposals.
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After a failed effort to boost taxes on oil companies, lawmakers turn attention to role of speculators in driving up oil prices.
High-profile votes on the energy issue are likely to continue until the fall election, say lawmakers on both sides of the aisle.