The new Act permits more student loan interest to be deducted.

Under current rules, taxpayers can deduct up to $2,500 in student loan interest above the line.  The deduction also had been severely limited by the rule that a taxpayer’s adjusted gross income must fall under a certain thresh hold and the interest must be attributable to payments made during the first 60 months in which interest payments are required.
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The new law scraps these restrictions.  It raises the income phase-out thresholds to $55,000 - $65,000 for singles; $100,000 - $130,000 for joint filers.  It also repeals both the annual dollar limit on the amount of the deduction and the 60-month limit.