Tom Landry made a trip into what he described as "enemy territory" yesterday and confidently predicted the Dallas Cowboys will have no difficulty signing Heisman Trophy winner Tony Dorsett.

"We think we'll get him," said the Dallas coach, in town for several speaking engagements and lunch on Capitol Hill.

"It's all to his advantage to play in the NFL over Canada, there's no question about that. There's always that possibility, of course, but I don't think we'll have any problems."

Landry was asked if Dorsett's anticipated million-dollar contract demand would throw the price structure of his team out of whack. "Anybody of that caliber is going to throw it out of whack," he said.

"There's no question he'll be one of the great backs in the history of the game. You have to talk about him like you talk about O. J. (Simpson) Oh yes, he'll fit right in on our team, no problems at all."

Landry already has learned that Touchdown Tony prefers to be known as "Dor-sette" (accent on the second syllable). He said the running back had been to Texas on Tuesday and will return next week with the other Cowboy rookies.

Landry seemed amused when told that Redskin coach George Allen said the Cowboys are now the overwhelming favorites to win the NFC East.

"He would tend to say that, wouldn't he?" Landry said. "I'm sure he'd like to see us get a little complacent, but I can tell you we won't."

A crowd of about 150, including several congressmen, showed up in the Cannon House Office Building's caucus room to meet Landry, obtain his autograph and listen to a 25-minute sermonette.

Landry has been extremely active in the Fellowship of Christian Athletes, and yesterday he spoke about being "a champion athlete and a champion Christian."

He also had a zinger or two for Allen that did not fall into the category of Love Thy Neighbor.

He told a story about a wealthy oil sheik who told his son he would buy him Disneyland.

"No, dad," said the son, "but I'd really like one of those Mickey Mousesuits."

"Fine," said the father, "I'll get you a Washington Redskin uniform."

I'm sure you won't have any trouble giving George Allen a little more ammunition," Landry told a reporter. I'm sure he'll cut this out and use it next fall."