President Obama travels to Denver this morning to sign the stimulus bill that has been almost the sole focus of his administration since taking office four weeks ago. The bill, which passed both the House and Senate on Friday, includes a number of measures to address the troubled housing market. Two measures in particular are notable: the $8,000 homebuyer tax credit, and the reinstatement of increased loan limits for FHA, Fannie Mae, and Freddie Mac. Details after the jump.