This week’s implosion of a bipartisan border security bill was proof that the Republican Party has no fundamental principles outside of loyalty to former President Donald Trump, according to the bill’s lead Democratic negotiator. Sen. Chris Murphy (D-Connecticut), who negotiated the details of the bill with Sens. James Lankford (R-Oklahoma) and Kyrsten Sinema (I-Arizona), had nothing but kind words for his fellow negotiators in a wide-ranging recent interview with Politico. However, Murphy said the bill’s abrupt and sudden death spoke volumes about his colleagues on the other side of the aisle…