Prince George’s County Executive Angela Alsobrooks on Thursday filed the paperwork with the State Board of Elections in her run for U.S. Senate. “Early childhood education and affordable childcare are absolutely critical for Maryland families. As a working mom, I know that affordable childcare is a necessity for parents, and it’s often cost prohibitive,” Alsobrooks said in a news release. “In the Senate, I plan to support efforts to expand access to affordable childcare for families that need it most, so that they’re not forced to forgo other household needs and they know their children are in a safe learning environment.”