The Democratic - dominated House of Representatives complied with his request by passing an amended bill expanding on the pro-slavery provisions of the Tyler treaty .
In December 1844 , lame - duck President Tyler called on Congress to pass his treaty by simple majorities in each house .
The Democratic - dominated House of Representatives complied with Tyler 's request by passing an amended bill expanding on the pro-slavery provisions of the Tyler treaty .
In December 1844 , lame - duck President Tyler called on Congress to pass his treaty by simple majorities in each house .