If Trump can't get along with GOP, how will he govern?
If Trump can't get along with the sitting speaker, and has poor relationships with sitting members of the Legislature, the idea of fashioning a conservative legislative agenda seems to me virtually nonexistent.
He may need Florida Sen. Marco Rubio — or "Little Marco" — to help implement his immigration priorities.
[...] President Trump's broader governing agenda will surely require the cooperation of House Speaker Paul Ryan, whom Trump thrust into a political firestorm a week ago by refusing to endorse him.
A steady stream of defections has continued, with longtime Republican officials and policy experts vowing not to vote for the GOP nominee.
After pummeling Cruz with personal insults during the primary season, Trump resurrected a conspiracy theory linking Cruz's father to the assassination of President John F. Kennedy the day after the Republican National Convention.
A demonstrated expert in parliamentary obstruction tactics, the Texas senator sits on the powerful Judiciary Committee, which has the power to endorse or reject Supreme Court nominees before they are reviewed by the full Senate.
The Republican nominee has railed against President Barack Obama's use of executive orders, yet Republican skeptics fear Trump might trigger what Weber called a "constitutional crisis, or at least a constitutional confrontation" should Congress deny his priorities.