WASHINGTON (AP) " The Latest on top pharmaceutical executives testifying before Senate lawmakers on rising drug prices (all times local):

11:20 a.m.

A top Republican senator is warning pharmaceutical executives to give open, honest answers to congressional questions about rising drug prices.

Iowa Sen. Charles Grassley on Tuesday opened a high-stakes hearing in which CEOs from seven major pharmaceutical companies will face pointed questions about how they price their medicines. Grassley chairs the Senate Finance Committee and says lawmakers won't ignore industry tactics used to block lower-cost drugs and keep prices high.

Ranking Democrat Sen. Ron Wyden of Oregon says the pharmaceutical industry treats patients like "unlocked ATMs full of cash to be extracted."

The hearing marks the first time lawmakers have called top industry executives to account for rising prices that are squeezing Americans.

President Donald Trump and Democrats have promised to bring prices down. Drug prices could provide a rare bipartisan issue on which Congress and the White House could collaborate on legislation this year.

The CEOs say prices reflect investment in research and development.

___

10:15 a.m.

The CEOs of seven major pharmaceutical companies are facing a hostile grilling from senators over high prescription drug prices that are a drain Medicare and Medicaid and a burden to millions of Americans.

The companies have collected tens of billions of dollars from government programs in recent years for brand-name medications to treat everything from high cholesterol to rheumatoid arthritis, cancer to HIV infection. List prices for top drugs keep rising.

The pharmaceutical industry is one of the most powerful lobbies in Washington, but Tuesday's Finance Committee hearing marks a change as lawmakers and President Donald Trump appear to be moving toward curbing costs.

Committee Chairman Charles Grassley of Iowa says Congress wants answers on why prices are so high.

The CEOs say prices reflect investment in research and development.