WASHINGTON -- In these deficit-conscious times, Congress should not pour more money into developing transportation infrastructure, but rather should ensure that existing highways and airports are managed better to get more use out of them, two economists said Monday.

Their comments at an infrastructure financing symposium come amid signs that both the Clinton Administration and Congress have taken infrastructure issues off the front burner in the wake of the defeat last spring of President Bill Clinton's $16 billion infrastructure and job stimulus bill.

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