WASHINGTON (AP) — The Latest on the U.S. presidential campaign (all times EDT):

2:08 p.m.

A Donald Trump ally is suggesting that Elizabeth Warren take a DNA test to clear up controversy over her heritage.

Former Massachusetts Sen. Scott Brown, who lost his Senate race to Warren in 2012, on Monday attacked Warren's past claim of having Native American heritage. He made the comment during a Monday afternoon conference call hosted by the Republican National Committee, responding to Warren's appearance with Democrat Hillary Clinton earlier in the day.

Republicans claim that Warren fabricated her ethnic background to gain an employment advantage. Warren denies that. She says she heard about her heritage from family stories.

Trump regularly mocks Warren as, "Pocahontas."

Brown, a vocal Trump supporter, said Clinton "is considering making someone vice president who has very serious character flaws when it comes to honesty and credibility" in dealing with her heritage.

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11:50 a.m.

A new study says Donald Trump's tax and budget plans would make the national debt skyrocket by $10 trillion or more over the coming decade, mostly because of expensive tax cuts.

The Committee for a Responsible Federal Budget also says Democrat Hillary Clinton's agenda — which relies on tax increases to pay for proposals such as expanding President Barack Obama's health care overhaul — would increase the debt by about $250 billion over 10 years.

Trump's tax plans, which include lowering the top income tax bracket from 39.6 percent to 25 percent and the top corporate rate from 35 percent to 15 percent, would add $9 trillion-plus to cumulative deficits over a decade. Clinton would increase taxes by $1.25 trillion.

The nonpartisan group advocates for smaller deficits.

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11:40 a.m.

Bernie Sanders is calling the Supreme Court's decision to strike down Texas' regulation of abortion clinics a "decisive victory for women across the country."

The Democratic presidential candidate says in a statement that the Supreme Court reaffirmed that access to a "safe and legal abortion is a woman's constitutional right," and a right that cannot be prevented by "extreme, Republican politicians."

The justices voted 5-3 on Monday in support of the Texas clinics that argued the regulations were an attempt to make it harder for women to get an abortion.

The Vermont senator says that the nation cannot go back to a time when "women in America did not have the right to control their own bodies."

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11:35 a.m.

Retired NFL player Herschel Walker says he's being dropped from speaking engagements because of his relationship with Donald Trump.

In an interview on the "TMZ Sports" TV show, the Heisman Trophy winner and former "Celebrity Apprentice" contestant said he's known Trump "before he became 'The Donald.'" Walker said the presumptive Republican nominee is not racist.

Walker told TMZ Sports "Just because you build a wall, doesn't mean you're a racist."

Trump has faced sharp criticism for his statements on immigration and plan to build a wall along the U.S. border with Mexico.

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11:05 a.m.

Hillary Clinton is offering effusive praise for Massachusetts Sen. Elizabeth Warren at their first event together during the presidential campaign, calling her someone who "tells it like it is."

Clinton says in Cincinnati, Ohio, that Warren has worked on behalf of hard-working Americans, trying to ensure that Wall Street "never wrecks" Main Street again and the federal government doesn't profit off student loans.

The Democratic presidential candidate says she also loves to see how Warren "gets under Donald Trump's thin skin." That's a nod to Warren's recent role as one of Trump's most vocal critics.

Clinton says that Trump "proves every day he's not in it for the American people, he's in it only for himself."

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10:55 a.m.

Hillary Clinton is taking the stage with Massachusetts Sen. Elizabeth Warren, who is calling Clinton a fighter who "has never backed down."

Clinton and Warren joined hands and waved to a cheering crowd in their first joint appearance. Warren told the crowd in Cincinnati, Ohio, "I'm here today because I'm with her," and said Democrats would "work our hearts out" to make Clinton president.

Warren is offering a harsh critique of Republican Donald Trump. She says he looks "goofy" in his trademark baseball cap. She warns that Trump "will crush you into the dirt to get whatever he wants."

Warren is a darling of liberals in the Democratic Party and considered a possible running mate for Clinton.

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10:35 a.m.

Hillary Clinton says the Supreme Court's ruling to strike down Texas' regulation of abortion clinics is "a victory for women in Texas and across America."

The Democratic presidential candidate says in a signed posting to Twitter that a "safe abortion should be a right-not just on paper, but in reality."

The justices voted 5-3 on Monday in support of the Texas clinics that argued the regulations were an attempt to make it harder for women to get an abortion.

Clinton says the "fight isn't over," adding that the "next president has to protect women's health. Women won't be 'punished' for exercising their basic rights."

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3:30 a.m.

Elizabeth Warren is joining Hillary Clinton in Cincinnati Monday for their first joint campaign event.

With Sen. Bernie Sanders fading from the spotlight, Warren is stepping up to reclaim her role as leader of the progressive wing of the Democratic Party. She's mobilizing her forces behind Clinton, lending her presidential bid a powerful boost of liberal credibility.

The two women have formed a tight electoral alliance, one that could grow even closer should Warren be selected as Clinton's running mate.

She's currently being vetted by lawyers charged with running the vice presidential process. They've already asked Warren to complete a questionnaire and for documents.

For Clinton, the visit offers an opportunity to win back some of the liberal and younger voters she lost to Sanders in the primary season.