NIXON MD FOR GIFT INV REPORTED
Sen source repts that Richard G Danner, Howard Hughes employe who worked on Pres Nixon's â68 Pres campaign, reptdly told Sen Watergate com that Pres Nixon personally suggested that he solicit campaign contribution from Hughes sometime before â68 election; rept contradicts assertion made many times by Nixon that he never discussed and did not learn of Hughesâ $100,000 contribution until after â72 election (M)