DONNA CASSATA, Associated Press

WASHINGTON (AP) — The new Congress convenes Tuesday with Republicans in control of the House and the Senate. They’ll serve as a formidable counterpoint to President Barack Obama in his final two years in office.

The GOP is intent on undoing the president’s policies, particularly his health care law and recent immigration actions as well as his environment and business regulations.

Several Republicans — with some Democratic help — want to impose tough new penalties on Iran. The lawmakers are unnerved by the prospect of a negotiated deal with Iran over its nuclear program.

Obama has the power to veto legislation, but that’s a step he’s only taken twice in six years. Expect plenty more in the next 24 months in showdowns between the Democratic president and the GOP-led Congress.