WASHINGTON — Because truth in labeling laws are among the laws from which Washington feels exempt, the titles of congressional legislation often take liberties with the facts (e.g., the Patient Protection and Affordable Care Act). The Stop Settlement Slush Funds Act, however, precisely names the ailment for which it is the remedy. The Justice Department has negotiated “bank settlement agreements” whereby banks make restitution to the government for the damage they allegedly did in connection with the creation and sale of residential mortgage-backed securities in the subprime mortgage crisis.