Story highlights The concern among rank-and-file Republican legislators has been palpable

A small group of moderate and conservative House Republicans voted against starting repeal

Washington (CNN) Republican lawmakers are heading to Philadelphia Wednesday for two days of intensive work on replacing Obamacare with hopes that some of the biggest questions can be answered by the often confounding President Donald Trump.

House and Senate Republicans will pack the city, not far from where Democrats nominated Hillary Clinton just six months ago, for their annual retreat -- and crafting a replacement plan for Obamacare is at the top of their list.

"Look there are a whole lot of different ideas about how to replace Obamacare," Senate Majority Leader Mitch McConnell said Tuesday, shortly before lawmakers left town. "As all of us have said repeatedly: it will be done in consultation with the new secretary of Health and Human Services, the new head of (the Centers Medicare and Medicaid Services) and active discussion among House and Senate Republicans, because we anticipate no cooperation from the other side."

The repeal part has not been much of a question for the Republican majorities, after they started the clock ticking on stripping core items from the Affordable Care Act earlier this month. But how to craft their own version of Obamacare has Republicans in something of a holding pattern inside the Capitol, largely waiting to see what Trump and his team will do.

The concern among rank-and-file legislators has been palpable.

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