Watch CBSN Live

U.S. Congress preps new round of Iran sanctions

(AP) WASHINGTON - U.S. House and Senate negotiators are wrapping up a bill to impose a new round of sanctions on Iran, targeting shipping lines and adding other punitive measures to derail Tehran's suspected push for nuclear weapons.

Iran offers Syria "experience and capabilities"
Watch: Romney: I support Israel's defense against a nuclear Iran
Iran steps up Hormuz rhetoric amid sanctions

Lawmakers hoped to unveil a final bill late Monday, with a House vote as early as Wednesday.

The measure would reconcile a bill the House passed last December and one the Senate backed in May. But several lawmakers are concerned that the legislation does not go far enough. They are pushing for a bill that labels Iran's energy sector a "zone of proliferation concern" which would effectively ban all business.

A draft version of the bill says it is the sense of Congress that Iran's energy sector be treated as a "zone of proliferation concern."