Some modifications occurred in the Spanish Aliens Act in November 2009. Amongst others, this law deems anyone agreeing to house an undocumented migrant (not living at his/her home) in order to allow the latter to be recorded in the local register to have committed a serious offence. This will have significant consequences on undocumented migrants' access to health care, as being registered in the local register (Padrón) is a sine qua non condition for having effective health care access.