Donald Trump will probably resign over a constitutional crisis caused  by his son-in-law and son, a leading professor of law at Columbia  University predicts.
  
Philip Bobbitt describes the President’s resignation as a consequence  of his family members being prosecuted as “the likeliest possibility.”
  
Emails released by Donald Trump Jr show that he met with a  Kremlin-based lawyer last summer, along with Trump’s son-in-law Jared  Kushner and Paul Manafort, the Republican campaign’s then chairman.
  
Trump  Jr's response to being offered compromising information about Hillary  Clinton ahead of the November election was to write “if it’s what you  say I love it especially later in the summer”.
  
“Whatever [Trump’s] policy goals, it has long been clear that  creating a dynasty — having destroyed the two reigning political  dynasties in the last campaign — is his greatest objective,” Professor  Bobbitt 
writes in the Evening Standard.
  
“Resignation, as remote as it seems right now, might well be a choice  the President would make to save his children from prison, and himself  from future prosecution.”
  
He says resignation would be the best way out of the “mess” created  by allegations of collusion with Russia over interference in the US  Presidential election.
Professor Bobbitt is a nephew of former President Lyndon B Johnson and a well-respected constitutional theorist.
  
He has acted as special adviser to every US President since his uncle, except Nixon, George W Bush, and now Trump.
  
He holds degrees from Princeton, Yale and Oxford.
          In the article, Professor Bobbitt also suggests that if Trump were to  be impeached rather than resigning of his own accord, this would happen  not on the basis of the President receiving a bribe but of him having  offered one.
  
“By determining that the head of the FBI, James Comey, wished to  continue in his post, the President came perilously close to violating  the constitution when he then stated that he would “think about it”, and  raised the subject of Comey terminating the Russia investigation.
  “Indeed, the offering of such a bribe formed one of the counts in  Richard Nixon’s impeachment when it was alleged he offered a judicial  promotion to a judge for favourable treatment in court."