Which of president Ronald Reagan's economic my have contributed to the savings and loans crisis?

The deregulation of the Saving & Loan industries of the early eighties (although that had partly started befefore he became President) and the 1986 Tax Reform Act. The S&L industry in retrospect identified 15 "major causes'' for the S&L crisis, many dating back to Reagans tenure as President. Click 'savings and loan crisis' on Wikipedia and you will find them all.