In Northern ProvincesTet Cease-Fire Canceled by AlliesSAIGON (UPI) — The Allies canceled their S6-hour Tet ceasefire In the North-South Vietnam battle zone Monday and left American forces free to battle a massive Communist invasion threat they said has spilled over into Laos.Military spokesmen announcedU.S. Would Talk Despite InfiltrationWASHINGTON (UPI)—TheState Department said Monday the United States would be willing to slop bombing North Vietnam and talk peace while permitting Hanoi to continue infiltration and supply of its forces at the present level.A department spokesman, Robert J. M c C 1 o s k e y, said the government endorses a statement made Thursday by Secretary of Defense-designate Clark Clifford that President Johnson’s terms for peace talks would not require any reciprocal reduction of the Communist military effort.McCioskey said Clifford's statement before the Senate Armed Services Committee, which subsequently approved his nomination as Pentagon chief, was “consistent with the San Antonio formula” enunciated by Johnson as the basis for peace talks with Hanoi.The “San Antonio formula” is the way the government refers to Johnson's statement of Sept. 29 that the United States would be willing to halt bombing the North if the Communists agreed to talk peace promptly.The President added that he “assume d” North Vietnam would not take advantage of a bombing pause.Clifford said Thursday, when asked to explain what this meant, that it would be assumed North Vietnam “will continue to transport the normal amount of goods, munitions and men to South Vietnam.”there will be no cease-fire in South Vietnam's northern five provinces and for 140 miles above the North Vietnamese border.“In all other areas, the bombing of the North will be stopped and there will be a cessation of ground activities,” one spokesman said.The South Vietnam government ordered the change at the urging of Gen. William Westmoreland, U.S. commander In Vietnam, whose men were battling an invasion by 40,000 North Vietnamese at the border, according to U.S. intelligence. The announcement came less than an hour before Allied troops elsewhere began the cease-fire to observe the start of the Buddhist new year.A South Vietnam government statement Monday said: There has been extensive buildup of North Vietnamese forces around the Marine border fort of KheSanh, including large numbers oftroops in neighboring areas of Laos. In addition, there is visible supply activity on a large scale in the southern areas of North Vietnam, obviously designed to support this offensive.“These developments are dramatic evidence of open North Vietnamese aggression against the Republic of Vietnam. Combined with the wholesale North Vietnamese and Viet Cong violations of the Christmas and New Year’s truces, these threatening preparations and actions underline how little respect the aggressors have for the peaceful purposes behind our proposals for truces during these traditional holidays,” the statement said.It marked the first official Allied announcement that North Vietnam's reported sweeps in Laos were part of what military observers said was an attemptto smash American forces defending the border zone.A U.S. spokesman said a cease-fire on the border only would have given the North Vietnamese a free hand to bolster their already threatening position.2 Bodies in Collapse Of Bridge FoundPOINT PLEASANT, W.Va. (AP)—The known victims from