(CNN) - It's a new week, but there's no let up in the back and forth between the presidential campaigns of Texas Gov. Rick Perry and former Massachusetts Gov. Mitt Romney.
In a web video out Monday, Perry's campaign continues to attack Romney's record on health care, while Romney's campaign, in a research document, highlight's Perry's immigration record, and tries to link Perry to President Barack Obama.
The Romney email, which is expected to be released later Monday, highlights a state law passed during Perry's first year as Texas governor that allows for in-state tuition for some illegal immigrants, an issue that was a major flash point in last week's GOP presidential debate in Orlando, Florida, and that many Republican activists say was a factor in Perry being upset at a much-watched straw poll in Florida Saturday. Perry finished a distant second in the straw poll voting to former Godfather's Pizza CEO and radio talk show host Herman Cain.
"Governor Perry And President Obama Both Support In-State Tuition For Illegal Immigrants," says a heading in the Romney document.
The other heading states that "Governor Perry And President Obama Have Both Been Dismissive Of Calls For More Fencing Along The Southern Border."
The email then highlights a Perry comment from May where he said that "we're spending millions down there building this fence, and I'll guarantee you, you know, the 15-foot ladder business is going to get good on that 14-foot fence," and compares it with a comment from Obama from the same month where the president said "you know, they said we needed to triple the border patrol. Or now they're going to say we need to quadruple the border patrol. Or they'll want a higher fence. Maybe they'll need a moat. Maybe they want alligators in the moat."
The Perry video, titled "Words have Meaning," begins with Romney's comment from last Thursday's debate where he said he stands by what he wrote in his book "No Apology" about the Massachusetts health care law passed while he was governor. The video highlights the words "we can accomplish the same thing for everyone in the country," from what it says is the March 2010 hardcover version of the book. Then it highlights what it says it a paperback version of the book from February, with the line missing.
The video then uses a clip from a Romney spokesperson saying in an interview on Fox News Channel that "there are updates to books from the hard cover to the paperback editions all the time."
Romney, who's making his second bid for the White House, was the front-runner in the national polls in the battle for the Republican presidential nomination until Perry jumped into the race six weeks ago. Perry quickly supplanted Romney in the national surveys, but Perry has been getting poor reviews for his uneven performances in the past two debates.