Sen. Elizabeth Warren (D-MA) argued in a Tuesday night tweetstorm that the “sacrifices” Sen. Ted Cruz (R-TX) says he has made during his campaign for the Republican presidential nomination pale in comparison to those made by American workers.

“Are you kidding me?” Warren wrote. “We’re supposed to pity you because trying to be the leader of the free world is hard?! 2 words: Boo hoo.”

The Massachusetts senator’s impassioned response came after Cruz sent a campaign email on Monday listing the stresses of the campaign trail. Describing “constant attacks” from the “liberal media,” a lack of family and personal time, and months with little sleep, Cruz said he was proud to make these “steep” sacrifices for his supporters.

Warren was unmoved, firing off a series of tweets about the lack of personal time experienced by Americans working multiple minimum-wage jobs as well as the “constant attacks” faced by immigrants, Muslims and women by GOP candidates like Cruz.

As of Wednesday morning, the Texas senator had not responded.

Read Warren’s tweets below:

Yesterday @TedCruz sent a campaign email whining about the “significant sacrifice” he’s made to run for President. pic.twitter.com/yKtLpWG0Ou — Elizabeth Warren (@elizabethforma) April 19, 2016

.@TedCruz whined about facing constant attacks, nonexistent family time, limited health and sleep, and no personal time. — Elizabeth Warren (@elizabethforma) April 19, 2016

Are you kidding me, @TedCruz? We’re supposed to pity you because trying to be the leader of the free world is hard?! 2 words: Boo hoo. — Elizabeth Warren (@elizabethforma) April 19, 2016

Know whose health is limited? Workers w/ no paid leave who can’t stay home when sick or caring for kids. @TedCruz won’t support it. — Elizabeth Warren (@elizabethforma) April 19, 2016

Know whose sleep is limited? Working parents who stay up worrying about getting kids thru college w/o big debt. @TedCruz blocked #refi. — Elizabeth Warren (@elizabethforma) April 19, 2016

Know who gets no personal time? People who work 2 min wage jobs to support their families. @TedCruz opposes giving them a raise. — Elizabeth Warren (@elizabethforma) April 19, 2016

Know who gets no family time, @TedCruz? Moms w/ unfair schedules who drop kids at daycare & find their hrs cancelled. @GOP won’t help. — Elizabeth Warren (@elizabethforma) April 19, 2016

Know who’s facing “constant attacks,” @TedCruz? Hardworking American immigrants, Muslims, LGBT folks, women. Your constant attacks. — Elizabeth Warren (@elizabethforma) April 19, 2016

And @TedCruz? Working people work more, get paid less, can’t save, get mistreated, struggle with illness & family – but they don’t whine. — Elizabeth Warren (@elizabethforma) April 19, 2016

They don’t throw tantrums or try to shut down their workplace because they don’t get their way – & then turn around & demand promotions. — Elizabeth Warren (@elizabethforma) April 19, 2016

You chose to run for President, @TedCruz. You chose to make your “sacrifices.” Working people don’t have a choice. — Elizabeth Warren (@elizabethforma) April 19, 2016