Westminster's Scottish Affairs Committee said the proposals showed "a lack of planning''.
Mum's Appeal For Missing RAF Serviceman
The mother of a missing RAF serviceman has pleaded for anyone who may have seen him to come forward.
Corrie McKeague, 23, disappeared nine days ago after going out for the evening with friends.
He was last seen on CCTV walking alone eating fast food in Bury St Edmunds, Suffolk, in the early hours of September 24.
His mother Nicola Urquhart, of Dunfermline, Scotland, has issued a public appeal for anyone with information about where her son may be to contact police.
She said: "My son has disappeared - so somebody please, if anyone knows anything, get in touch, get in touch with Suffolk Police.
"We would like him to come home, we would like him to come home soon so please get in touch.''
She said his disappearance has been "hard'' for the family and added: "I don't want this to be a story about Corrie, what kind of person he is, it's about finding him.''
Mrs Urquhart said her son would "never, never'' be out of contact with his family for so long. He had spoken to his brother four times the day before he went missing.
"This is not Corrie, he would not do this out of choice,'' she continued.
Mrs Urquhart praised the police, the RAF and other search teams for their "fantastic'' work.
She asked Suffolk residents to check their gardens and said her son may have decided to "have a sleep'' before making his way home.
She said: "Check your gardens, check your own properties please, but leave the proper searching to the police and people who know what they are doing.''
She added: "He is a good-looking lad at three in the morning walking around in a pink shirt... he is easily identifiable.''
Mr McKeague, a gunner in Number Two Squadron, based at Honington, has been in the RAF for three years and "loves'' his work, Mrs Urquhart added.
She said: "The RAF are a family and they really do look after their own, and that's something that I really do want to stress.
"The boys that were with him are not responsible for Corrie.
"Corrie does the same thing every time he goes out. Once he goes out he is an absolute creature of habit. He will leave absolutely on his own, that's not unusual.
"He will go and get food and if he has to lay down and have a sleep before he goes home then he will.
"Nothing in his behaviour was even remotely unusual and the boys that he was with would not have been able to stop him from doing that. Because that's what he does.''
Acting Superintendent Kim Warner said: "This is a missing person inquiry, not an abduction inquiry.
"There is nothing to suggest at this stage that a third party is involved, nothing to suggest there is an abduction involved in this inquiry.''
The search is focused on a nine-mile area between Bury St Edmunds and Honington, he said.
Mr Warner added: "Nine miles wouldn't have been a significant distance for him to march, not at all.''
Mr McKeague was last seen at about 3.20am on Saturday September 24.
He is believed to have been wearing a pink Ralph Lauren polo shirt and brown suede Timberland boots and is described as white, 5ft 10in, of medium build, with short light brown hair.
Holyrood's Sport Committee has warned the Protection of Vulnerable Groups (PVG) system "may not be preventing unsuitable people from doing regulated work''.
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