Senior Democratic lawmaker faces calls to resign amid absence from the Senate

Rep. Rashida Tlaib urged Sen. Dianne Feinstein to step down due to Feinstein's prolonged absence from the Senate.
Feinstein's absence has allowed Senate Republicans to pass legislation and left Democrats short-handed.
Tlaib is the third House Democrat to publicly call for Feinstein to resign.
Feinstein's spokesperson said the senator intends to return once doctors clear her for travel.
Those calling for Feinstein's resignation cited her age, health issues, and questions about her mental fitness.