Trump, and his Republican cohorts in Congress, are still claiming they will repeal Obamacare -- and replace it with a plan of their own. They have been negotiating among themselves since their initial plan failed, and while they claim they are "close" to agreeing on a plan, there is no date set for a vote in Congress (or real evidence they have a plan that will work).
Rumor has it that, in an effort to please their "freedom caucus", they have made their original plan even worse. It now will not only reduce or eliminate subsidies (throwing millions off the health insurance rolls), but now will allow states to decide whether insurance companies can charge some people more (like those with pre-existing conditions), or whether insurance companies have to sell a plan with guaranteed benefits.
It's no surprise to me that Republicans can't agree to vote on a plan. They are probably reading the same polls that we all are -- polls that say the opposition to their "repeal and replace" plan is growing more unpopular each day.
The chart above shows this. Back in February, about 34% said they had little or no confidence in the Republican plan. That has now grown to 50% (half of the population). Most people now want Obamacare kept, and fixed.
This chart is from a new NBC News / Wall Street Journal Poll -- done between April 17th and 20th of a random national sample of 900 adults, with a margin of error of 3.3 points.