Capital inflows into the United States accelerated in June as foreigners bought a record amount of corporate bonds, the Treasury Department said Monday. Foreign capital inflows into the United States rose to $71.2 billion from $55.8 billion in May. Foreign demand for long-term U.S. Treasurys sank to $7.9 billion, the lowest in 21 months, from $27.6 billion in May. Foreigners sold $24.8 billion in short-term Treasurys in June. Foreign purchases of U.S. corporate bonds rose to a record $52.2 billion from $20.4 billion in May.