Pressure on real estate appraisers to provide predetermined valuations of collateral has been mounting over the last couple of years, but Congress has been ignoring the issue, according to the Appraisal Institute. The Chicago-based institute, which sets professional and ethical standards for the appraisal industry, said that it has been lobbying Congress for the past four years for legislation that would prohibit inappropriate pressure on appraisers to inflate an appraisal. It also has asked…