In October 2011, Moore had begun the process of applying for US$2 million to help 800 residents build shelters where they could "seek refuge from severe weather".
Local authorities had hoped to get approval around the end of 2012 but instead found themselves faced with a "constantly moving target" of federal regulations which changed during the application process.
In a frustrated statement released three months before the tornadoes struck, officials said: "The City's safe room rebate program is still 'on hold', with not a lot changed from our update of last May".
They continued: "We've found that the [Federal Emergency Management Agency] requirements and their interpretations seem to be a constantly moving target, more so with the new wrinkles."
The statement added there was "not a lot of grant money available" because the federal Government had made only a limited number of major disaster declarations, which unleash new funds.
The disclosure will raise questions over whether more could have been done in preparation for the storm.
Obama assured the people of Moore that federal authorities would be beside them as they tended to "frightened children who will need our continued love and attention".
"There are empty spaces where there used to be living rooms, and bedrooms, and classrooms, and, in time, we're going to need to refill those spaces with love and laughter and community," he said.