The Times reports on Rep. Rangel’s effectiveness in light of controversy surrounding his financial disclosures.

Now, Democratic officials and donors say that that the ethical questions hanging over Mr. Rangel, who has represented Harlem in Congress since 1971, are taking a toll, particularly as Republicans spotlight his problems in ads and repeated pushes are made to try to force him to step aside from the chairmanship. The House Ethics Committee is investigating the allegations against him.