Oklahoma state Rep. Mike Ritze is a foot soldier — one of hundreds — in a passionate war over the Affordable Care Act that is reigniting as state legislatures convene across the country.

The Republican lawmaker, a family doctor, has stood behind three anti-Obamacare bills supported by conservative groups in Oklahoma and other states. None has made it into law, but Ritze plans to pick up the fight in the 2015 legislative session that convenes in the Sooner State next month.

Delivering his sixth State of the Union address Tuesday night, President Obama faced a Congress that's now controlled by his Republican opponents. His speech included possible areas of cooperation — and a threat to use his veto power.

Tax proposals that would boost middle-class families were in the president's speech; so were calls for a new approach to immigration and a push for free education at community colleges.

Obama also called on Congress to pass a resolution to authorize using military force against the extremist group ISIS.

Full text of the GOP response to President Obama's State of the Union address as prepared for delivery and given by Sen. Joni Ernst (R-Iowa):

Good evening.

I'm Joni Ernst. As a mother, a soldier, and a newly elected senator from the great State of Iowa, I am proud to speak with you tonight.

A few moments ago, we heard the President lay out his vision for the year to come. Even if we may not always agree, it's important to hear different points of view in this great country. We appreciate the President sharing his.

President Obama's State of the Union address as prepared for delivery on Jan. 20, 2015:

Mr. Speaker, Mr. Vice President, Members of Congress, my fellow Americans:

We are fifteen years into this new century. Fifteen years that dawned with terror touching our shores; that unfolded with a new generation fighting two long and costly wars; that saw a vicious recession spread across our nation and the world. It has been, and still is, a hard time for many.

But tonight, we turn the page.

On the education front, President Obama's State of the Union address is likely to focus on three big proposals:

First, the president wants to talk about the idea he floated last week of making community college tuition-free. This is new.

The plan would benefit about 9 million full- and part-time students and would cost the federal government about $60 billion over 10 years. According to the administration's numbers, that would account for three-fourths of the total cost. States and community colleges would come up with the rest.