Fact check: Who's right about protections for pre-existing conditions?

As Sen. Joe Manchin, a Democrat from West Virginia, campaigns for re-election, he has warned that 800,000 West Virginians with pre-existing conditions could lose health coverage.
As Sen. Joe Manchin, a Democrat from West Virginia, campaigns for re-election, he has warned that 800,000 West Virginians with pre-existing conditions could lose health coverage.