By Lauren Fox, Morgan Rimmer and Manu Raju, CNN

(CNN) — Republicans have set an ambitious deadline of trying to pass President Donald Trump’s sweeping agenda through Congress by the fourth of July, kickstarting an intensive negotiation in the US Senate where Republican lawmakers are all over the map when it comes to the specific changes they want to see made to the House-passed bill.

The challenge ahead for Senate Majority Leader John Thune is he can only afford to lose three votes, but he must find consensus between conservatives in his conference who are pushing for more spending cuts and others who already fear that some of the cuts to Medicaid and rollbacks to clean energy tax credits that were a cornerstone of the House bill went too far.

It’s a herculean task and one made more com

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