NEW YORK - Top congressional Democrats are calling for an ethics investigation - and the truth - about whether scandalized Rep. Anthony Weiner (D-N.Y.) broke any rules or used government resources to send lewd pictures over the Internet.

Rep. Steve Israel (D-N.Y.), the House Democrats' campaign chief, said the congressman had "embarrassed himself, his family and the House." A spokeswoman for Democratic whip Steny Hoyer, of Maryland, said Hoyer urged Weiner to come clean about the messages and photos he sent on Twitter.

The Republican Party chairman said Tuesday that Weiner should resign after admitting to sexually charged online relationships with several women and lying about his misdeeds.

Reince Priebus said in a statement that either Pelosi and Democratic chairwoman Debbie Wasserman Schultz believe that members of Congress are held to a different standard, or they believe the congressman's actions demand his departure from the House. AP wire services contributed to this report

VIDEO: Rep. Weiner's news conference on tweeting lewd photo