Chief executives of some of America's largest retailers, including Target Corp and Best Buy Co Inc , are headed to Washington this week to make their case that a controversial tax on imports would raise consumer prices and hurt their businesses, according to people familiar with the plan. The group of eight retail bosses, that also includes chief executives of Gap Inc and Autozone Inc , will meet on Wednesday with Kevin Brady, chairman of the tax-writing House Ways and Means Committee, and with members of the Senate, four people said in recent days. This is the first time well-known retail CEOs will descend on Washington as a group to try to make the case to kill the import tax proposal.