Washington (CNN) From Obamacare to tax policy, President-elect Donald Trump and his fellow GOPers in Congress agree on the big picture ideas, but those pesky details are causing some disagreements.

What's clear three days before Trump takes the oath is that it will take some time for all of them to reach a consensus on his key priorities -- if they ever do. For instance, Trump wants an Obamacare replacement in place right away, and he's not a fan of House Speaker Paul Ryan's "border adjustment tax." Details, details ...

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