Editing Kim Philby (section)

===Washington, D.C.===
In September 1949, the Philbys arrived in the United States. Officially, his post was that of First Secretary to the British Embassy; in reality, he served as chief British intelligence representative in Washington. His office oversaw a large amount of urgent and [[Classified information#Top Secret (TS)|top secret]] communications between Washington and London. Philby was also responsible for liaising with the CIA and promoting "more aggressive Anglo-American intelligence operations".{{sfn|Seale|McConnville|1973|p= 201}} A leading figure within the CIA was Philby's wary former colleague, James Jesus Angleton, with whom he once again found himself working closely. Angleton remained suspicious of Philby but lunched with him every week in Washington.

A more serious threat to Philby's position had come to light. During the summer of 1945, a Soviet [[cipher]] clerk had reused a [[one-time pad]] to transmit intelligence traffic. This mistake made it possible to break the normally impregnable code. Contained in the traffic (intercepted and decrypted as part of the [[Venona project]]) was information that documents had been sent to Moscow from the British embassy in Washington. The intercepted messages revealed that the embassy source (identified as "Homer") travelled to [[New York City]] to meet his Soviet contact twice a week. Philby had been briefed on the situation shortly before reaching Washington in 1949; it was clear to Philby that the agent was Maclean, who worked in the embassy at the time and whose wife, Melinda, lived in New York. Philby had to help discover the identity of "Homer", but also wished to protect Maclean.{{sfn|Richelson|1997|p=228}}

In January 1950, on evidence provided by the Venona intercepts, Soviet atomic spy [[Klaus Fuchs]] was arrested. His arrest led to others: [[Harry Gold]], a courier with whom Fuchs had worked, [[David Greenglass]], and [[Julius and Ethel Rosenberg]]. The investigation into the embassy leak continued and the stress of it was exacerbated by the arrival in Washington, in October 1950, of Burgess—Philby's unstable and dangerously alcoholic fellow spy.{{sfn|Seale|McConnville|1973|p= 209}}

Burgess, who had been given a post as Second Secretary at the British Embassy, took up residence in the Philby family home and rapidly set about causing offence to all and sundry. Philby's wife resented him and disliked his presence; Americans were offended by his "natural superciliousness" and "utter contempt for the whole pyramid of values, attitudes, and courtesies of the American way of life". [[J. Edgar Hoover]] complained that Burgess used British embassy automobiles to avoid arrest when he cruised Washington in pursuit of [[homosexuality|homosexual]] encounters.{{sfn|Seale|McConnville|1973|p= 209}} His dissolution had a troubling effect on Philby; the morning after a particularly disastrous and drunken party, a guest returning to collect his car heard voices upstairs and found "Kim and Guy in the bedroom drinking champagne. They had already been down to the Embassy but being unable to work had come back".{{sfn|Seale|McConnville|1973|p= 210}}

Burgess' presence was awkward for Philby, yet it was potentially dangerous for Philby to leave him unsupervised. The situation in Washington was tense. From April 1950, Maclean had been the [[prime suspect]] in the investigation into the embassy leak.{{sfn|Boyle|1979|p= 362}} Philby had undertaken to devise an escape plan that would warn Maclean, in England, of the intense suspicion he was under and arrange for him to flee. Burgess had to get to London to warn Maclean, who was under surveillance. In early May 1951, Burgess got three speeding tickets in a single day—then pleaded [[diplomatic immunity]], causing an official complaint to be made to the British ambassador.{{sfn|Boyle|1979|p= 365}} Burgess was sent back to England, where he met Maclean in his London club.{{citation needed|date = July 2013}}

The SIS planned to interrogate Maclean on 28 May 1951. On 23 May, concerned that Maclean had not yet fled, Philby wired Burgess, ostensibly about his [[Lincoln (automobile)|Lincoln]] convertible that had been abandoned in the embassy car park. "If he did not act at once it would be too late", the telegram read, "because [Philby] would send his car to the scrap heap. There was nothing more [he] could do."{{sfn|Boyle|1979|p= 374}} On 25 May, Burgess drove Maclean from his home at [[Tatsfield]], Surrey, to [[Southampton]], where both boarded the steamship ''Falaise'' to France and then proceeded to Moscow.{{sfn|Lownie|2016|pp=237–239}}{{sfn|Macintyre|2015|pp=150–151}}