(CNN) Angry Democrats say they have the perfect proof that Republicans don't yet have a plan to replace Obamacare: a draft legislation with a blank section labeled, "Placeholder."

The bill, which is being written by Republican Rep. Greg Walden, is aimed at ensuring that people with pre-existing conditions are not denied coverage or charged higher premiums -- one of the most popular pillars of President Barack Obama's Affordable Care Act. That unfinished legislation was one of four Obamacare-related draft bills that members of a House Energy subcommittee debated Thursday.

The seventh page of Walden's discussion draft ends abruptly under a section called, "Title II -- Continuous Coverage Incentive." It simply reads: "[Placeholder]."

Democrats were incredulous.

"I had to laugh when you said that the ACA was hastily built upon. I mean, the chairman's bill, literally, runs off the page," said Democratic Rep. Frank Pallone, who waved the bill in the air from the dais. "Placeholder? Talk about hastily built. What is this, half-built?"

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