LOS ANGELES—According to a Los Angeles Times survey published Tuesday, an increasing number of Americans believe undocumented immigrants pose a threat to their favored spot on the couch, with many expressing concern that illegal aliens are “actively plotting” to take their seat as early as the next time they get up to go to the kitchen or bathroom. “I’ve been sitting on this part of the couch for 40 years, and I’ll be damned if some foreigner thinks he can sit down right here where my father sat, and my grandfather before him,” survey respondent Earl Lockwood of Tulsa, OK said. “I earned this spot.” The poll also found that a majority of Americans support the recently enacted Arizona law requiring immigrants to present proper identification before calling dibs on a particular seat.