WASHINGTON — The latest Republican proposal to repeal and replace the Affordable Care Act cuts federal health care funding while potentially increasing costs for people with pre-existing conditions, according to two independent analyses.The bill, backed by Republican Sens. Lindsey Graham, Bill Cassidy, Dean Heller and Ron Johnson, would cut federal spending on the health care act’s expansion of coverage by about $81.6 billion through 2026, according to an analysis by consultant Manatt Health.