On Monday night, Democrats will "begin objecting to all unanimous consent requests", according to a senior Senate Democratic aide.
Pressed on the lack of committee hearings or input by a reporter, he described the Senate GOP working group as "a committee of the whole".
The Senate Minority Leader added "If Republicans won't relent and debate their health care bill in the open for the American people to see, then they shouldn't expect business as usual in the Senate".
Senate Finance Committee chairman Orrin Hatch, R-Utah, said holding public hearings about the legislation would only give Democrats more opportunity to attack the bill. Trump recently told Republican senators that the health care bill passed in the House is "mean" and urged them to craft a "more generous" version.
The aide spoke on condition of anonymity because he was not authorized to openly discuss the plans.
The House bill is extremely unpopular, with voters disapproving of the legislation by almost 4 to 1.
The governors say Congress must focus more on controlling costs and settling the individual insurance market.
Democrats are also telegraphing a series of parliamentary inquiries from their chamber desks to the presiding officer that they hope will show a contrast in the legislative process used to advance what became the 2010 health care overhaul law and the current process.
Some moderate GOP senators are trying to extend the phase-out over seven years and ease some of the Medicaid cuts the House bill would make. The plan has not been made public! That matters: In order to protect the Senate's ability to pass the bill under budget rules that require only a simple majority rather than 60 votes, the bill's savings must at least match those of the House version.
Spoiler: No one knows what the final Senate bill will look like - not even those writing it.
Republicans have said the House bill is aimed at lowering premiums and expanding consumers' insurance choices while getting rid of the mandates in "Obamacare" that require people to buy coverage. Rob PortmanRob PortmanThese GOP senators need to stand up to their party on healthcare Senate GOP considers deeper Medicaid cuts than House bill ObamaCare: Six key parts of the Senate bill MORE (R-Ohio), said: "Rob does not support a growth rate that is lower than the House bill".
"Health care is priority No. 1 right now", said Nicole Gill, executive director of Tax March, which organized more than 100 rallies across the country on April 15. It has, on the other hand, produced the ancillary benefit for Republicans of making it hard for their Democratic colleagues to plan their own activities.
When the House was debating the health-care bill earlier in the year, a significant grassroots campaign against the measure almost derailed it, as Republican lawmakers were bombarded by hostile questions and large crowds in town halls back home. "Conservatives would like to clear the books of Obamacare's most costly regulations and free the states to regulate their markets how they wish", wrote Sen.