Bernie Sanders’s plan to wipe out Americans’ $1.6 trillion in student debt could face thorny political and practical problems if he is elected president in November.

The Vermont senator, an Independent who has surged to the top of the national polls in the Democratic presidential primary, has drawn little congressional support for his plan. A bill he introduced with Rep. Ilhan Omar (D., Minn.) last summer has just a dozen co-sponsors, all in the Democratic-controlled House, where it has languished.

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